1 /* BFD back-end for HP PA-RISC ELF files.
2 Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1999, 2000, 2001
3 Free Software Foundation, Inc.
6 Center for Software Science
7 Department of Computer Science
9 Largely rewritten by Alan Modra <alan@linuxcare.com.au>
11 This file is part of BFD, the Binary File Descriptor library.
13 This program is free software; you can redistribute it and/or modify
14 it under the terms of the GNU General Public License as published by
15 the Free Software Foundation; either version 2 of the License, or
16 (at your option) any later version.
18 This program is distributed in the hope that it will be useful,
19 but WITHOUT ANY WARRANTY; without even the implied warranty of
20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 GNU General Public License for more details.
23 You should have received a copy of the GNU General Public License
24 along with this program; if not, write to the Free Software
25 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
33 #include "elf32-hppa.h"
36 #include "elf32-hppa.h"
38 /* In order to gain some understanding of code in this file without
39 knowing all the intricate details of the linker, note the
42 Functions named elf32_hppa_* are called by external routines, other
43 functions are only called locally. elf32_hppa_* functions appear
44 in this file more or less in the order in which they are called
45 from external routines. eg. elf32_hppa_check_relocs is called
46 early in the link process, elf32_hppa_finish_dynamic_sections is
47 one of the last functions. */
49 /* We use two hash tables to hold information for linking PA ELF objects.
51 The first is the elf32_hppa_link_hash_table which is derived
52 from the standard ELF linker hash table. We use this as a place to
53 attach other hash tables and static information.
55 The second is the stub hash table which is derived from the
56 base BFD hash table. The stub hash table holds the information
57 necessary to build the linker stubs during a link.
59 There are a number of different stubs generated by the linker.
67 : addil LR'X - ($PIC_pcrel$0 - 4),%r1
68 : be,n RR'X - ($PIC_pcrel$0 - 8)(%sr4,%r1)
70 Import stub to call shared library routine from normal object file
71 (single sub-space version)
72 : addil LR'lt_ptr+ltoff,%dp ; get procedure entry point
73 : ldw RR'lt_ptr+ltoff(%r1),%r21
75 : ldw RR'lt_ptr+ltoff+4(%r1),%r19 ; get new dlt value.
77 Import stub to call shared library routine from shared library
78 (single sub-space version)
79 : addil LR'ltoff,%r19 ; get procedure entry point
80 : ldw RR'ltoff(%r1),%r21
82 : ldw RR'ltoff+4(%r1),%r19 ; get new dlt value.
84 Import stub to call shared library routine from normal object file
85 (multiple sub-space support)
86 : addil LR'lt_ptr+ltoff,%dp ; get procedure entry point
87 : ldw RR'lt_ptr+ltoff(%r1),%r21
88 : ldw RR'lt_ptr+ltoff+4(%r1),%r19 ; get new dlt value.
91 : be 0(%sr0,%r21) ; branch to target
92 : stw %rp,-24(%sp) ; save rp
94 Import stub to call shared library routine from shared library
95 (multiple sub-space support)
96 : addil LR'ltoff,%r19 ; get procedure entry point
97 : ldw RR'ltoff(%r1),%r21
98 : ldw RR'ltoff+4(%r1),%r19 ; get new dlt value.
101 : be 0(%sr0,%r21) ; branch to target
102 : stw %rp,-24(%sp) ; save rp
104 Export stub to return from shared lib routine (multiple sub-space support)
105 One of these is created for each exported procedure in a shared
106 library (and stored in the shared lib). Shared lib routines are
107 called via the first instruction in the export stub so that we can
108 do an inter-space return. Not required for single sub-space.
109 : bl,n X,%rp ; trap the return
111 : ldw -24(%sp),%rp ; restore the original rp
114 : be,n 0(%sr0,%rp) ; inter-space return */
116 #define PLT_ENTRY_SIZE 8
117 #define PLABEL_PLT_ENTRY_SIZE PLT_ENTRY_SIZE
118 #define GOT_ENTRY_SIZE 4
119 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
121 static const bfd_byte plt_stub[] =
123 0x0e, 0x80, 0x10, 0x96, /* 1: ldw 0(%r20),%r22 */
124 0xea, 0xc0, 0xc0, 0x00, /* bv %r0(%r22) */
125 0x0e, 0x88, 0x10, 0x95, /* ldw 4(%r20),%r21 */
126 #define PLT_STUB_ENTRY (3*4)
127 0xea, 0x9f, 0x1f, 0xdd, /* b,l 1b,%r20 */
128 0xd6, 0x80, 0x1c, 0x1e, /* depi 0,31,2,%r20 */
129 0x00, 0xc0, 0xff, 0xee, /* 9: .word fixup_func */
130 0xde, 0xad, 0xbe, 0xef /* .word fixup_ltp */
133 /* Section name for stubs is the associated section name plus this
135 #define STUB_SUFFIX ".stub"
137 /* We don't need to copy certain PC- or GP-relative dynamic relocs
138 into a shared object's dynamic section. All the relocs of the
139 limited class we are interested in, are absolute. */
140 #ifndef RELATIVE_DYNRELOCS
141 #define RELATIVE_DYNRELOCS 0
142 #define IS_ABSOLUTE_RELOC(r_type) 1
145 enum elf32_hppa_stub_type {
146 hppa_stub_long_branch,
147 hppa_stub_long_branch_shared,
149 hppa_stub_import_shared,
154 struct elf32_hppa_stub_hash_entry {
156 /* Base hash table entry structure. */
157 struct bfd_hash_entry root;
159 /* The stub section. */
162 /* Offset within stub_sec of the beginning of this stub. */
165 /* Given the symbol's value and its section we can determine its final
166 value when building the stubs (so the stub knows where to jump. */
167 bfd_vma target_value;
168 asection *target_section;
170 enum elf32_hppa_stub_type stub_type;
172 /* The symbol table entry, if any, that this was derived from. */
173 struct elf32_hppa_link_hash_entry *h;
175 /* Where this stub is being called from, or, in the case of combined
176 stub sections, the first input section in the group. */
180 struct elf32_hppa_link_hash_entry {
182 struct elf_link_hash_entry elf;
184 /* A pointer to the most recently used stub hash entry against this
186 struct elf32_hppa_stub_hash_entry *stub_cache;
188 /* Used to count relocations for delayed sizing of relocation
190 struct elf32_hppa_dyn_reloc_entry {
192 /* Next relocation in the chain. */
193 struct elf32_hppa_dyn_reloc_entry *next;
195 /* The input section of the reloc. */
198 /* Number of relocs copied in this section. */
201 #if RELATIVE_DYNRELOCS
202 /* Number of relative relocs copied for the input section. */
203 bfd_size_type relative_count;
207 /* Set during a static link if we detect a function is PIC. */
208 unsigned int maybe_pic_call:1;
210 /* Set if the only reason we need a .plt entry is for a non-PIC to
211 PIC function call. */
212 unsigned int pic_call:1;
214 /* Set if this symbol is used by a plabel reloc. */
215 unsigned int plabel:1;
217 /* Set if this symbol is an init or fini function and thus should
218 use an absolute reloc. */
219 unsigned int plt_abs:1;
222 struct elf32_hppa_link_hash_table {
224 /* The main hash table. */
225 struct elf_link_hash_table elf;
227 /* The stub hash table. */
228 struct bfd_hash_table stub_hash_table;
230 /* Linker stub bfd. */
233 /* Linker call-backs. */
234 asection * (*add_stub_section) PARAMS ((const char *, asection *));
235 void (*layout_sections_again) PARAMS ((void));
237 /* Array to keep track of which stub sections have been created, and
238 information on stub grouping. */
240 /* This is the section to which stubs in the group will be
243 /* The stub section. */
247 /* Short-cuts to get to dynamic linker sections. */
255 /* Used during a final link to store the base of the text and data
256 segments so that we can perform SEGREL relocations. */
257 bfd_vma text_segment_base;
258 bfd_vma data_segment_base;
260 /* Whether we support multiple sub-spaces for shared libs. */
261 unsigned int multi_subspace:1;
263 /* Flags set when PCREL12F and PCREL17F branches detected. Used to
264 select suitable defaults for the stub group size. */
265 unsigned int has_12bit_branch:1;
266 unsigned int has_17bit_branch:1;
268 /* Set if we need a .plt stub to support lazy dynamic linking. */
269 unsigned int need_plt_stub:1;
272 /* Various hash macros and functions. */
273 #define hppa_link_hash_table(p) \
274 ((struct elf32_hppa_link_hash_table *) ((p)->hash))
276 #define hppa_stub_hash_lookup(table, string, create, copy) \
277 ((struct elf32_hppa_stub_hash_entry *) \
278 bfd_hash_lookup ((table), (string), (create), (copy)))
280 static struct bfd_hash_entry *stub_hash_newfunc
281 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
283 static struct bfd_hash_entry *hppa_link_hash_newfunc
284 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
286 static struct bfd_link_hash_table *elf32_hppa_link_hash_table_create
289 /* Stub handling functions. */
290 static char *hppa_stub_name
291 PARAMS ((const asection *, const asection *,
292 const struct elf32_hppa_link_hash_entry *,
293 const Elf_Internal_Rela *));
295 static struct elf32_hppa_stub_hash_entry *hppa_get_stub_entry
296 PARAMS ((const asection *, const asection *,
297 struct elf32_hppa_link_hash_entry *,
298 const Elf_Internal_Rela *,
299 struct elf32_hppa_link_hash_table *));
301 static struct elf32_hppa_stub_hash_entry *hppa_add_stub
302 PARAMS ((const char *, asection *, struct elf32_hppa_link_hash_table *));
304 static enum elf32_hppa_stub_type hppa_type_of_stub
305 PARAMS ((asection *, const Elf_Internal_Rela *,
306 struct elf32_hppa_link_hash_entry *, bfd_vma));
308 static boolean hppa_build_one_stub
309 PARAMS ((struct bfd_hash_entry *, PTR));
311 static boolean hppa_size_one_stub
312 PARAMS ((struct bfd_hash_entry *, PTR));
314 /* BFD and elf backend functions. */
315 static boolean elf32_hppa_object_p PARAMS ((bfd *));
317 static boolean elf32_hppa_add_symbol_hook
318 PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *,
319 const char **, flagword *, asection **, bfd_vma *));
321 static boolean elf32_hppa_create_dynamic_sections
322 PARAMS ((bfd *, struct bfd_link_info *));
324 static void elf32_hppa_copy_indirect_symbol
325 PARAMS ((struct elf_link_hash_entry *, struct elf_link_hash_entry *));
327 static boolean elf32_hppa_check_relocs
328 PARAMS ((bfd *, struct bfd_link_info *,
329 asection *, const Elf_Internal_Rela *));
331 static asection *elf32_hppa_gc_mark_hook
332 PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *,
333 struct elf_link_hash_entry *, Elf_Internal_Sym *));
335 static boolean elf32_hppa_gc_sweep_hook
336 PARAMS ((bfd *, struct bfd_link_info *,
337 asection *, const Elf_Internal_Rela *));
339 static void elf32_hppa_hide_symbol
340 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
342 static boolean elf32_hppa_adjust_dynamic_symbol
343 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
345 static boolean hppa_handle_PIC_calls
346 PARAMS ((struct elf_link_hash_entry *, PTR));
348 static boolean allocate_dynrelocs
349 PARAMS ((struct elf_link_hash_entry *, PTR));
351 static boolean readonly_dynrelocs
352 PARAMS ((struct elf_link_hash_entry *, PTR));
354 static boolean clobber_millicode_symbols
355 PARAMS ((struct elf_link_hash_entry *, struct bfd_link_info *));
357 static boolean elf32_hppa_size_dynamic_sections
358 PARAMS ((bfd *, struct bfd_link_info *));
360 static boolean elf32_hppa_final_link
361 PARAMS ((bfd *, struct bfd_link_info *));
363 static void hppa_record_segment_addr
364 PARAMS ((bfd *, asection *, PTR));
366 static bfd_reloc_status_type final_link_relocate
367 PARAMS ((asection *, bfd_byte *, const Elf_Internal_Rela *,
368 bfd_vma, struct elf32_hppa_link_hash_table *, asection *,
369 struct elf32_hppa_link_hash_entry *));
371 static boolean elf32_hppa_relocate_section
372 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *,
373 bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
375 static int hppa_unwind_entry_compare
376 PARAMS ((const PTR, const PTR));
378 static boolean elf32_hppa_finish_dynamic_symbol
379 PARAMS ((bfd *, struct bfd_link_info *,
380 struct elf_link_hash_entry *, Elf_Internal_Sym *));
382 static enum elf_reloc_type_class elf32_hppa_reloc_type_class
383 PARAMS ((const Elf_Internal_Rela *));
385 static boolean elf32_hppa_finish_dynamic_sections
386 PARAMS ((bfd *, struct bfd_link_info *));
388 static void elf32_hppa_post_process_headers
389 PARAMS ((bfd *, struct bfd_link_info *));
391 static int elf32_hppa_elf_get_symbol_type
392 PARAMS ((Elf_Internal_Sym *, int));
394 /* Assorted hash table functions. */
396 /* Initialize an entry in the stub hash table. */
398 static struct bfd_hash_entry *
399 stub_hash_newfunc (entry, table, string)
400 struct bfd_hash_entry *entry;
401 struct bfd_hash_table *table;
404 /* Allocate the structure if it has not already been allocated by a
408 entry = bfd_hash_allocate (table,
409 sizeof (struct elf32_hppa_stub_hash_entry));
414 /* Call the allocation method of the superclass. */
415 entry = bfd_hash_newfunc (entry, table, string);
418 struct elf32_hppa_stub_hash_entry *eh;
420 /* Initialize the local fields. */
421 eh = (struct elf32_hppa_stub_hash_entry *) entry;
424 eh->target_value = 0;
425 eh->target_section = NULL;
426 eh->stub_type = hppa_stub_long_branch;
434 /* Initialize an entry in the link hash table. */
436 static struct bfd_hash_entry *
437 hppa_link_hash_newfunc (entry, table, string)
438 struct bfd_hash_entry *entry;
439 struct bfd_hash_table *table;
442 /* Allocate the structure if it has not already been allocated by a
446 entry = bfd_hash_allocate (table,
447 sizeof (struct elf32_hppa_link_hash_entry));
452 /* Call the allocation method of the superclass. */
453 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
456 struct elf32_hppa_link_hash_entry *eh;
458 /* Initialize the local fields. */
459 eh = (struct elf32_hppa_link_hash_entry *) entry;
460 eh->stub_cache = NULL;
461 eh->dyn_relocs = NULL;
462 eh->maybe_pic_call = 0;
471 /* Create the derived linker hash table. The PA ELF port uses the derived
472 hash table to keep information specific to the PA ELF linker (without
473 using static variables). */
475 static struct bfd_link_hash_table *
476 elf32_hppa_link_hash_table_create (abfd)
479 struct elf32_hppa_link_hash_table *ret;
480 bfd_size_type amt = sizeof (*ret);
482 ret = (struct elf32_hppa_link_hash_table *) bfd_alloc (abfd, amt);
486 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, hppa_link_hash_newfunc))
488 bfd_release (abfd, ret);
492 /* Init the stub hash table too. */
493 if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc))
496 ret->stub_bfd = NULL;
497 ret->add_stub_section = NULL;
498 ret->layout_sections_again = NULL;
499 ret->stub_group = NULL;
506 ret->text_segment_base = (bfd_vma) -1;
507 ret->data_segment_base = (bfd_vma) -1;
508 ret->multi_subspace = 0;
509 ret->has_12bit_branch = 0;
510 ret->has_17bit_branch = 0;
511 ret->need_plt_stub = 0;
513 return &ret->elf.root;
516 /* Build a name for an entry in the stub hash table. */
519 hppa_stub_name (input_section, sym_sec, hash, rel)
520 const asection *input_section;
521 const asection *sym_sec;
522 const struct elf32_hppa_link_hash_entry *hash;
523 const Elf_Internal_Rela *rel;
530 len = 8 + 1 + strlen (hash->elf.root.root.string) + 1 + 8 + 1;
531 stub_name = bfd_malloc (len);
532 if (stub_name != NULL)
534 sprintf (stub_name, "%08x_%s+%x",
535 input_section->id & 0xffffffff,
536 hash->elf.root.root.string,
537 (int) rel->r_addend & 0xffffffff);
542 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
543 stub_name = bfd_malloc (len);
544 if (stub_name != NULL)
546 sprintf (stub_name, "%08x_%x:%x+%x",
547 input_section->id & 0xffffffff,
548 sym_sec->id & 0xffffffff,
549 (int) ELF32_R_SYM (rel->r_info) & 0xffffffff,
550 (int) rel->r_addend & 0xffffffff);
556 /* Look up an entry in the stub hash. Stub entries are cached because
557 creating the stub name takes a bit of time. */
559 static struct elf32_hppa_stub_hash_entry *
560 hppa_get_stub_entry (input_section, sym_sec, hash, rel, htab)
561 const asection *input_section;
562 const asection *sym_sec;
563 struct elf32_hppa_link_hash_entry *hash;
564 const Elf_Internal_Rela *rel;
565 struct elf32_hppa_link_hash_table *htab;
567 struct elf32_hppa_stub_hash_entry *stub_entry;
568 const asection *id_sec;
570 /* If this input section is part of a group of sections sharing one
571 stub section, then use the id of the first section in the group.
572 Stub names need to include a section id, as there may well be
573 more than one stub used to reach say, printf, and we need to
574 distinguish between them. */
575 id_sec = htab->stub_group[input_section->id].link_sec;
577 if (hash != NULL && hash->stub_cache != NULL
578 && hash->stub_cache->h == hash
579 && hash->stub_cache->id_sec == id_sec)
581 stub_entry = hash->stub_cache;
587 stub_name = hppa_stub_name (id_sec, sym_sec, hash, rel);
588 if (stub_name == NULL)
591 stub_entry = hppa_stub_hash_lookup (&htab->stub_hash_table,
592 stub_name, false, false);
593 if (stub_entry == NULL)
595 if (hash == NULL || hash->elf.root.type != bfd_link_hash_undefweak)
596 (*_bfd_error_handler) (_("%s(%s+0x%lx): cannot find stub entry %s"),
597 bfd_archive_filename (input_section->owner),
599 (long) rel->r_offset,
605 hash->stub_cache = stub_entry;
614 /* Add a new stub entry to the stub hash. Not all fields of the new
615 stub entry are initialised. */
617 static struct elf32_hppa_stub_hash_entry *
618 hppa_add_stub (stub_name, section, htab)
619 const char *stub_name;
621 struct elf32_hppa_link_hash_table *htab;
625 struct elf32_hppa_stub_hash_entry *stub_entry;
627 link_sec = htab->stub_group[section->id].link_sec;
628 stub_sec = htab->stub_group[section->id].stub_sec;
629 if (stub_sec == NULL)
631 stub_sec = htab->stub_group[link_sec->id].stub_sec;
632 if (stub_sec == NULL)
637 len = strlen (link_sec->name) + sizeof (STUB_SUFFIX);
638 s_name = bfd_alloc (htab->stub_bfd, len);
642 strcpy (s_name, link_sec->name);
643 strcpy (s_name + len - sizeof (STUB_SUFFIX), STUB_SUFFIX);
644 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
645 if (stub_sec == NULL)
647 htab->stub_group[link_sec->id].stub_sec = stub_sec;
649 htab->stub_group[section->id].stub_sec = stub_sec;
652 /* Enter this entry into the linker stub hash table. */
653 stub_entry = hppa_stub_hash_lookup (&htab->stub_hash_table, stub_name,
655 if (stub_entry == NULL)
657 (*_bfd_error_handler) (_("%s: cannot create stub entry %s"),
658 bfd_archive_filename (section->owner),
663 stub_entry->stub_sec = stub_sec;
664 stub_entry->stub_offset = 0;
665 stub_entry->id_sec = link_sec;
669 /* Determine the type of stub needed, if any, for a call. */
671 static enum elf32_hppa_stub_type
672 hppa_type_of_stub (input_sec, rel, hash, destination)
674 const Elf_Internal_Rela *rel;
675 struct elf32_hppa_link_hash_entry *hash;
679 bfd_vma branch_offset;
680 bfd_vma max_branch_offset;
684 && (((hash->elf.root.type == bfd_link_hash_defined
685 || hash->elf.root.type == bfd_link_hash_defweak)
686 && hash->elf.root.u.def.section->output_section == NULL)
687 || (hash->elf.root.type == bfd_link_hash_defweak
688 && hash->elf.dynindx != -1
689 && hash->elf.plt.offset != (bfd_vma) -1)
690 || hash->elf.root.type == bfd_link_hash_undefweak
691 || hash->elf.root.type == bfd_link_hash_undefined
692 || (hash->maybe_pic_call && !(input_sec->flags & SEC_HAS_GOT_REF))))
694 /* If output_section is NULL, then it's a symbol defined in a
695 shared library. We will need an import stub. Decide between
696 hppa_stub_import and hppa_stub_import_shared later. For
697 shared links we need stubs for undefined or weak syms too;
698 They will presumably be resolved by the dynamic linker. */
699 return hppa_stub_import;
702 /* Determine where the call point is. */
703 location = (input_sec->output_offset
704 + input_sec->output_section->vma
707 branch_offset = destination - location - 8;
708 r_type = ELF32_R_TYPE (rel->r_info);
710 /* Determine if a long branch stub is needed. parisc branch offsets
711 are relative to the second instruction past the branch, ie. +8
712 bytes on from the branch instruction location. The offset is
713 signed and counts in units of 4 bytes. */
714 if (r_type == (unsigned int) R_PARISC_PCREL17F)
716 max_branch_offset = (1 << (17-1)) << 2;
718 else if (r_type == (unsigned int) R_PARISC_PCREL12F)
720 max_branch_offset = (1 << (12-1)) << 2;
722 else /* R_PARISC_PCREL22F. */
724 max_branch_offset = (1 << (22-1)) << 2;
727 if (branch_offset + max_branch_offset >= 2*max_branch_offset)
728 return hppa_stub_long_branch;
730 return hppa_stub_none;
733 /* Build one linker stub as defined by the stub hash table entry GEN_ENTRY.
734 IN_ARG contains the link info pointer. */
736 #define LDIL_R1 0x20200000 /* ldil LR'XXX,%r1 */
737 #define BE_SR4_R1 0xe0202002 /* be,n RR'XXX(%sr4,%r1) */
739 #define BL_R1 0xe8200000 /* b,l .+8,%r1 */
740 #define ADDIL_R1 0x28200000 /* addil LR'XXX,%r1,%r1 */
741 #define DEPI_R1 0xd4201c1e /* depi 0,31,2,%r1 */
743 #define ADDIL_DP 0x2b600000 /* addil LR'XXX,%dp,%r1 */
744 #define LDW_R1_R21 0x48350000 /* ldw RR'XXX(%sr0,%r1),%r21 */
745 #define BV_R0_R21 0xeaa0c000 /* bv %r0(%r21) */
746 #define LDW_R1_R19 0x48330000 /* ldw RR'XXX(%sr0,%r1),%r19 */
748 #define ADDIL_R19 0x2a600000 /* addil LR'XXX,%r19,%r1 */
749 #define LDW_R1_DP 0x483b0000 /* ldw RR'XXX(%sr0,%r1),%dp */
751 #define LDSID_R21_R1 0x02a010a1 /* ldsid (%sr0,%r21),%r1 */
752 #define MTSP_R1 0x00011820 /* mtsp %r1,%sr0 */
753 #define BE_SR0_R21 0xe2a00000 /* be 0(%sr0,%r21) */
754 #define STW_RP 0x6bc23fd1 /* stw %rp,-24(%sr0,%sp) */
756 #define BL_RP 0xe8400002 /* b,l,n XXX,%rp */
757 #define NOP 0x08000240 /* nop */
758 #define LDW_RP 0x4bc23fd1 /* ldw -24(%sr0,%sp),%rp */
759 #define LDSID_RP_R1 0x004010a1 /* ldsid (%sr0,%rp),%r1 */
760 #define BE_SR0_RP 0xe0400002 /* be,n 0(%sr0,%rp) */
767 #define LDW_R1_DLT LDW_R1_R19
769 #define LDW_R1_DLT LDW_R1_DP
773 hppa_build_one_stub (gen_entry, in_arg)
774 struct bfd_hash_entry *gen_entry;
777 struct elf32_hppa_stub_hash_entry *stub_entry;
778 struct bfd_link_info *info;
779 struct elf32_hppa_link_hash_table *htab;
789 /* Massage our args to the form they really have. */
790 stub_entry = (struct elf32_hppa_stub_hash_entry *) gen_entry;
791 info = (struct bfd_link_info *) in_arg;
793 htab = hppa_link_hash_table (info);
794 stub_sec = stub_entry->stub_sec;
796 /* Make a note of the offset within the stubs for this entry. */
797 stub_entry->stub_offset = stub_sec->_raw_size;
798 loc = stub_sec->contents + stub_entry->stub_offset;
800 stub_bfd = stub_sec->owner;
802 switch (stub_entry->stub_type)
804 case hppa_stub_long_branch:
805 /* Create the long branch. A long branch is formed with "ldil"
806 loading the upper bits of the target address into a register,
807 then branching with "be" which adds in the lower bits.
808 The "be" has its delay slot nullified. */
809 sym_value = (stub_entry->target_value
810 + stub_entry->target_section->output_offset
811 + stub_entry->target_section->output_section->vma);
813 val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_lrsel);
814 insn = hppa_rebuild_insn ((int) LDIL_R1, val, 21);
815 bfd_put_32 (stub_bfd, insn, loc);
817 val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_rrsel) >> 2;
818 insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17);
819 bfd_put_32 (stub_bfd, insn, loc + 4);
824 case hppa_stub_long_branch_shared:
825 /* Branches are relative. This is where we are going to. */
826 sym_value = (stub_entry->target_value
827 + stub_entry->target_section->output_offset
828 + stub_entry->target_section->output_section->vma);
830 /* And this is where we are coming from, more or less. */
831 sym_value -= (stub_entry->stub_offset
832 + stub_sec->output_offset
833 + stub_sec->output_section->vma);
835 bfd_put_32 (stub_bfd, (bfd_vma) BL_R1, loc);
836 val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_lrsel);
837 insn = hppa_rebuild_insn ((int) ADDIL_R1, val, 21);
838 bfd_put_32 (stub_bfd, insn, loc + 4);
840 val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_rrsel) >> 2;
841 insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17);
842 bfd_put_32 (stub_bfd, insn, loc + 8);
846 case hppa_stub_import:
847 case hppa_stub_import_shared:
848 off = stub_entry->h->elf.plt.offset;
849 if (off >= (bfd_vma) -2)
852 off &= ~ (bfd_vma) 1;
854 + htab->splt->output_offset
855 + htab->splt->output_section->vma
856 - elf_gp (htab->splt->output_section->owner));
860 if (stub_entry->stub_type == hppa_stub_import_shared)
863 val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_lrsel),
864 insn = hppa_rebuild_insn ((int) insn, val, 21);
865 bfd_put_32 (stub_bfd, insn, loc);
867 /* It is critical to use lrsel/rrsel here because we are using
868 two different offsets (+0 and +4) from sym_value. If we use
869 lsel/rsel then with unfortunate sym_values we will round
870 sym_value+4 up to the next 2k block leading to a mis-match
871 between the lsel and rsel value. */
872 val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_rrsel);
873 insn = hppa_rebuild_insn ((int) LDW_R1_R21, val, 14);
874 bfd_put_32 (stub_bfd, insn, loc + 4);
876 if (htab->multi_subspace)
878 val = hppa_field_adjust (sym_value, (bfd_signed_vma) 4, e_rrsel);
879 insn = hppa_rebuild_insn ((int) LDW_R1_DLT, val, 14);
880 bfd_put_32 (stub_bfd, insn, loc + 8);
882 bfd_put_32 (stub_bfd, (bfd_vma) LDSID_R21_R1, loc + 12);
883 bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1, loc + 16);
884 bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_R21, loc + 20);
885 bfd_put_32 (stub_bfd, (bfd_vma) STW_RP, loc + 24);
891 bfd_put_32 (stub_bfd, (bfd_vma) BV_R0_R21, loc + 8);
892 val = hppa_field_adjust (sym_value, (bfd_signed_vma) 4, e_rrsel);
893 insn = hppa_rebuild_insn ((int) LDW_R1_DLT, val, 14);
894 bfd_put_32 (stub_bfd, insn, loc + 12);
900 && stub_entry->h != NULL
901 && stub_entry->h->pic_call)
903 /* Build the .plt entry needed to call a PIC function from
904 statically linked code. We don't need any relocs. */
906 struct elf32_hppa_link_hash_entry *eh;
909 dynobj = htab->elf.dynobj;
910 eh = (struct elf32_hppa_link_hash_entry *) stub_entry->h;
912 if (eh->elf.root.type != bfd_link_hash_defined
913 && eh->elf.root.type != bfd_link_hash_defweak)
916 value = (eh->elf.root.u.def.value
917 + eh->elf.root.u.def.section->output_offset
918 + eh->elf.root.u.def.section->output_section->vma);
920 /* Fill in the entry in the procedure linkage table.
922 The format of a plt entry is
926 bfd_put_32 (htab->splt->owner, value,
927 htab->splt->contents + off);
928 value = elf_gp (htab->splt->output_section->owner);
929 bfd_put_32 (htab->splt->owner, value,
930 htab->splt->contents + off + 4);
934 case hppa_stub_export:
935 /* Branches are relative. This is where we are going to. */
936 sym_value = (stub_entry->target_value
937 + stub_entry->target_section->output_offset
938 + stub_entry->target_section->output_section->vma);
940 /* And this is where we are coming from. */
941 sym_value -= (stub_entry->stub_offset
942 + stub_sec->output_offset
943 + stub_sec->output_section->vma);
945 if (sym_value - 8 + 0x40000 >= 0x80000)
947 (*_bfd_error_handler)
948 (_("%s(%s+0x%lx): cannot reach %s, recompile with -ffunction-sections"),
949 bfd_archive_filename (stub_entry->target_section->owner),
951 (long) stub_entry->stub_offset,
952 stub_entry->root.string);
953 bfd_set_error (bfd_error_bad_value);
957 val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_fsel) >> 2;
958 insn = hppa_rebuild_insn ((int) BL_RP, val, 17);
959 bfd_put_32 (stub_bfd, insn, loc);
961 bfd_put_32 (stub_bfd, (bfd_vma) NOP, loc + 4);
962 bfd_put_32 (stub_bfd, (bfd_vma) LDW_RP, loc + 8);
963 bfd_put_32 (stub_bfd, (bfd_vma) LDSID_RP_R1, loc + 12);
964 bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1, loc + 16);
965 bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_RP, loc + 20);
967 /* Point the function symbol at the stub. */
968 stub_entry->h->elf.root.u.def.section = stub_sec;
969 stub_entry->h->elf.root.u.def.value = stub_sec->_raw_size;
979 stub_sec->_raw_size += size;
1005 /* As above, but don't actually build the stub. Just bump offset so
1006 we know stub section sizes. */
1009 hppa_size_one_stub (gen_entry, in_arg)
1010 struct bfd_hash_entry *gen_entry;
1013 struct elf32_hppa_stub_hash_entry *stub_entry;
1014 struct elf32_hppa_link_hash_table *htab;
1017 /* Massage our args to the form they really have. */
1018 stub_entry = (struct elf32_hppa_stub_hash_entry *) gen_entry;
1019 htab = (struct elf32_hppa_link_hash_table *) in_arg;
1021 if (stub_entry->stub_type == hppa_stub_long_branch)
1023 else if (stub_entry->stub_type == hppa_stub_long_branch_shared)
1025 else if (stub_entry->stub_type == hppa_stub_export)
1027 else /* hppa_stub_import or hppa_stub_import_shared. */
1029 if (htab->multi_subspace)
1035 stub_entry->stub_sec->_raw_size += size;
1039 /* Return nonzero if ABFD represents an HPPA ELF32 file.
1040 Additionally we set the default architecture and machine. */
1043 elf32_hppa_object_p (abfd)
1046 Elf_Internal_Ehdr * i_ehdrp;
1049 i_ehdrp = elf_elfheader (abfd);
1050 if (strcmp (bfd_get_target (abfd), "elf32-hppa-linux") == 0)
1052 if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_LINUX)
1057 if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_HPUX)
1061 flags = i_ehdrp->e_flags;
1062 switch (flags & (EF_PARISC_ARCH | EF_PARISC_WIDE))
1064 case EFA_PARISC_1_0:
1065 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 10);
1066 case EFA_PARISC_1_1:
1067 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 11);
1068 case EFA_PARISC_2_0:
1069 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 20);
1070 case EFA_PARISC_2_0 | EF_PARISC_WIDE:
1071 return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 25);
1076 /* Undo the generic ELF code's subtraction of section->vma from the
1077 value of each external symbol. */
1080 elf32_hppa_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
1081 bfd *abfd ATTRIBUTE_UNUSED;
1082 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1083 const Elf_Internal_Sym *sym ATTRIBUTE_UNUSED;
1084 const char **namep ATTRIBUTE_UNUSED;
1085 flagword *flagsp ATTRIBUTE_UNUSED;
1089 *valp += (*secp)->vma;
1093 /* Create the .plt and .got sections, and set up our hash table
1094 short-cuts to various dynamic sections. */
1097 elf32_hppa_create_dynamic_sections (abfd, info)
1099 struct bfd_link_info *info;
1101 struct elf32_hppa_link_hash_table *htab;
1103 /* Don't try to create the .plt and .got twice. */
1104 htab = hppa_link_hash_table (info);
1105 if (htab->splt != NULL)
1108 /* Call the generic code to do most of the work. */
1109 if (! _bfd_elf_create_dynamic_sections (abfd, info))
1112 htab->splt = bfd_get_section_by_name (abfd, ".plt");
1113 htab->srelplt = bfd_get_section_by_name (abfd, ".rela.plt");
1115 htab->sgot = bfd_get_section_by_name (abfd, ".got");
1116 htab->srelgot = bfd_make_section (abfd, ".rela.got");
1117 if (htab->srelgot == NULL
1118 || ! bfd_set_section_flags (abfd, htab->srelgot,
1123 | SEC_LINKER_CREATED
1125 || ! bfd_set_section_alignment (abfd, htab->srelgot, 2))
1128 htab->sdynbss = bfd_get_section_by_name (abfd, ".dynbss");
1129 htab->srelbss = bfd_get_section_by_name (abfd, ".rela.bss");
1134 /* Copy the extra info we tack onto an elf_link_hash_entry. */
1137 elf32_hppa_copy_indirect_symbol (dir, ind)
1138 struct elf_link_hash_entry *dir, *ind;
1140 struct elf32_hppa_link_hash_entry *edir, *eind;
1142 edir = (struct elf32_hppa_link_hash_entry *) dir;
1143 eind = (struct elf32_hppa_link_hash_entry *) ind;
1145 if (eind->dyn_relocs != NULL)
1147 if (edir->dyn_relocs != NULL)
1149 struct elf32_hppa_dyn_reloc_entry **pp;
1150 struct elf32_hppa_dyn_reloc_entry *p;
1152 if (ind->root.type == bfd_link_hash_indirect)
1155 /* Add reloc counts against the weak sym to the strong sym
1156 list. Merge any entries against the same section. */
1157 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
1159 struct elf32_hppa_dyn_reloc_entry *q;
1161 for (q = edir->dyn_relocs; q != NULL; q = q->next)
1162 if (q->sec == p->sec)
1164 #if RELATIVE_DYNRELOCS
1165 q->relative_count += p->relative_count;
1167 q->count += p->count;
1174 *pp = edir->dyn_relocs;
1177 edir->dyn_relocs = eind->dyn_relocs;
1178 eind->dyn_relocs = NULL;
1181 _bfd_elf_link_hash_copy_indirect (dir, ind);
1184 /* Look through the relocs for a section during the first phase, and
1185 calculate needed space in the global offset table, procedure linkage
1186 table, and dynamic reloc sections. At this point we haven't
1187 necessarily read all the input files. */
1190 elf32_hppa_check_relocs (abfd, info, sec, relocs)
1192 struct bfd_link_info *info;
1194 const Elf_Internal_Rela *relocs;
1196 Elf_Internal_Shdr *symtab_hdr;
1197 struct elf_link_hash_entry **sym_hashes;
1198 const Elf_Internal_Rela *rel;
1199 const Elf_Internal_Rela *rel_end;
1200 struct elf32_hppa_link_hash_table *htab;
1202 asection *stubreloc;
1204 if (info->relocateable)
1207 htab = hppa_link_hash_table (info);
1208 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1209 sym_hashes = elf_sym_hashes (abfd);
1213 rel_end = relocs + sec->reloc_count;
1214 for (rel = relocs; rel < rel_end; rel++)
1223 unsigned int r_symndx, r_type;
1224 struct elf32_hppa_link_hash_entry *h;
1227 r_symndx = ELF32_R_SYM (rel->r_info);
1229 if (r_symndx < symtab_hdr->sh_info)
1232 h = ((struct elf32_hppa_link_hash_entry *)
1233 sym_hashes[r_symndx - symtab_hdr->sh_info]);
1235 r_type = ELF32_R_TYPE (rel->r_info);
1239 case R_PARISC_DLTIND14F:
1240 case R_PARISC_DLTIND14R:
1241 case R_PARISC_DLTIND21L:
1242 /* This symbol requires a global offset table entry. */
1243 need_entry = NEED_GOT;
1245 /* Mark this section as containing PIC code. */
1246 sec->flags |= SEC_HAS_GOT_REF;
1249 case R_PARISC_PLABEL14R: /* "Official" procedure labels. */
1250 case R_PARISC_PLABEL21L:
1251 case R_PARISC_PLABEL32:
1252 /* If the addend is non-zero, we break badly. */
1253 if (rel->r_addend != 0)
1256 /* If we are creating a shared library, then we need to
1257 create a PLT entry for all PLABELs, because PLABELs with
1258 local symbols may be passed via a pointer to another
1259 object. Additionally, output a dynamic relocation
1260 pointing to the PLT entry.
1261 For executables, the original 32-bit ABI allowed two
1262 different styles of PLABELs (function pointers): For
1263 global functions, the PLABEL word points into the .plt
1264 two bytes past a (function address, gp) pair, and for
1265 local functions the PLABEL points directly at the
1266 function. The magic +2 for the first type allows us to
1267 differentiate between the two. As you can imagine, this
1268 is a real pain when it comes to generating code to call
1269 functions indirectly or to compare function pointers.
1270 We avoid the mess by always pointing a PLABEL into the
1271 .plt, even for local functions. */
1272 need_entry = PLT_PLABEL | NEED_PLT | NEED_DYNREL;
1275 case R_PARISC_PCREL12F:
1276 htab->has_12bit_branch = 1;
1278 case R_PARISC_PCREL17C:
1279 case R_PARISC_PCREL17F:
1280 htab->has_17bit_branch = 1;
1282 case R_PARISC_PCREL22F:
1283 /* Function calls might need to go through the .plt, and
1284 might require long branch stubs. */
1287 /* We know local syms won't need a .plt entry, and if
1288 they need a long branch stub we can't guarantee that
1289 we can reach the stub. So just flag an error later
1290 if we're doing a shared link and find we need a long
1296 /* Global symbols will need a .plt entry if they remain
1297 global, and in most cases won't need a long branch
1298 stub. Unfortunately, we have to cater for the case
1299 where a symbol is forced local by versioning, or due
1300 to symbolic linking, and we lose the .plt entry. */
1301 need_entry = NEED_PLT;
1302 if (h->elf.type == STT_PARISC_MILLI)
1307 case R_PARISC_SEGBASE: /* Used to set segment base. */
1308 case R_PARISC_SEGREL32: /* Relative reloc, used for unwind. */
1309 case R_PARISC_PCREL14F: /* PC relative load/store. */
1310 case R_PARISC_PCREL14R:
1311 case R_PARISC_PCREL17R: /* External branches. */
1312 case R_PARISC_PCREL21L: /* As above, and for load/store too. */
1313 /* We don't need to propagate the relocation if linking a
1314 shared object since these are section relative. */
1317 case R_PARISC_DPREL14F: /* Used for gp rel data load/store. */
1318 case R_PARISC_DPREL14R:
1319 case R_PARISC_DPREL21L:
1322 (*_bfd_error_handler)
1323 (_("%s: relocation %s can not be used when making a shared object; recompile with -fPIC"),
1324 bfd_archive_filename (abfd),
1325 elf_hppa_howto_table[r_type].name);
1326 bfd_set_error (bfd_error_bad_value);
1331 case R_PARISC_DIR17F: /* Used for external branches. */
1332 case R_PARISC_DIR17R:
1333 case R_PARISC_DIR14F: /* Used for load/store from absolute locn. */
1334 case R_PARISC_DIR14R:
1335 case R_PARISC_DIR21L: /* As above, and for ext branches too. */
1337 /* Help debug shared library creation. Any of the above
1338 relocs can be used in shared libs, but they may cause
1339 pages to become unshared. */
1342 (*_bfd_error_handler)
1343 (_("%s: relocation %s should not be used when making a shared object; recompile with -fPIC"),
1344 bfd_archive_filename (abfd),
1345 elf_hppa_howto_table[r_type].name);
1350 case R_PARISC_DIR32: /* .word relocs. */
1351 /* We may want to output a dynamic relocation later. */
1352 need_entry = NEED_DYNREL;
1355 /* This relocation describes the C++ object vtable hierarchy.
1356 Reconstruct it for later use during GC. */
1357 case R_PARISC_GNU_VTINHERIT:
1358 if (!_bfd_elf32_gc_record_vtinherit (abfd, sec,
1359 &h->elf, rel->r_offset))
1363 /* This relocation describes which C++ vtable entries are actually
1364 used. Record for later use during GC. */
1365 case R_PARISC_GNU_VTENTRY:
1366 if (!_bfd_elf32_gc_record_vtentry (abfd, sec,
1367 &h->elf, rel->r_addend))
1375 /* Now carry out our orders. */
1376 if (need_entry & NEED_GOT)
1378 /* Allocate space for a GOT entry, as well as a dynamic
1379 relocation for this entry. */
1380 if (htab->sgot == NULL)
1382 if (htab->elf.dynobj == NULL)
1383 htab->elf.dynobj = abfd;
1384 if (!elf32_hppa_create_dynamic_sections (htab->elf.dynobj, info))
1390 h->elf.got.refcount += 1;
1394 bfd_signed_vma *local_got_refcounts;
1396 /* This is a global offset table entry for a local symbol. */
1397 local_got_refcounts = elf_local_got_refcounts (abfd);
1398 if (local_got_refcounts == NULL)
1402 /* Allocate space for local got offsets and local
1403 plt offsets. Done this way to save polluting
1404 elf_obj_tdata with another target specific
1406 size = symtab_hdr->sh_info;
1407 size *= 2 * sizeof (bfd_signed_vma);
1408 local_got_refcounts = ((bfd_signed_vma *)
1409 bfd_zalloc (abfd, size));
1410 if (local_got_refcounts == NULL)
1412 elf_local_got_refcounts (abfd) = local_got_refcounts;
1414 local_got_refcounts[r_symndx] += 1;
1418 if (need_entry & NEED_PLT)
1420 /* If we are creating a shared library, and this is a reloc
1421 against a weak symbol or a global symbol in a dynamic
1422 object, then we will be creating an import stub and a
1423 .plt entry for the symbol. Similarly, on a normal link
1424 to symbols defined in a dynamic object we'll need the
1425 import stub and a .plt entry. We don't know yet whether
1426 the symbol is defined or not, so make an entry anyway and
1427 clean up later in adjust_dynamic_symbol. */
1428 if ((sec->flags & SEC_ALLOC) != 0)
1432 h->elf.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
1433 h->elf.plt.refcount += 1;
1435 /* If this .plt entry is for a plabel, mark it so
1436 that adjust_dynamic_symbol will keep the entry
1437 even if it appears to be local. */
1438 if (need_entry & PLT_PLABEL)
1441 else if (need_entry & PLT_PLABEL)
1443 bfd_signed_vma *local_got_refcounts;
1444 bfd_signed_vma *local_plt_refcounts;
1446 local_got_refcounts = elf_local_got_refcounts (abfd);
1447 if (local_got_refcounts == NULL)
1451 /* Allocate space for local got offsets and local
1453 size = symtab_hdr->sh_info;
1454 size *= 2 * sizeof (bfd_signed_vma);
1455 local_got_refcounts = ((bfd_signed_vma *)
1456 bfd_zalloc (abfd, size));
1457 if (local_got_refcounts == NULL)
1459 elf_local_got_refcounts (abfd) = local_got_refcounts;
1461 local_plt_refcounts = (local_got_refcounts
1462 + symtab_hdr->sh_info);
1463 local_plt_refcounts[r_symndx] += 1;
1468 if (need_entry & NEED_DYNREL)
1470 /* Flag this symbol as having a non-got, non-plt reference
1471 so that we generate copy relocs if it turns out to be
1473 if (h != NULL && !info->shared)
1474 h->elf.elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
1476 /* If we are creating a shared library then we need to copy
1477 the reloc into the shared library. However, if we are
1478 linking with -Bsymbolic, we need only copy absolute
1479 relocs or relocs against symbols that are not defined in
1480 an object we are including in the link. PC- or DP- or
1481 DLT-relative relocs against any local sym or global sym
1482 with DEF_REGULAR set, can be discarded. At this point we
1483 have not seen all the input files, so it is possible that
1484 DEF_REGULAR is not set now but will be set later (it is
1485 never cleared). We account for that possibility below by
1486 storing information in the dyn_relocs field of the
1489 A similar situation to the -Bsymbolic case occurs when
1490 creating shared libraries and symbol visibility changes
1491 render the symbol local.
1493 As it turns out, all the relocs we will be creating here
1494 are absolute, so we cannot remove them on -Bsymbolic
1495 links or visibility changes anyway. A STUB_REL reloc
1496 is absolute too, as in that case it is the reloc in the
1497 stub we will be creating, rather than copying the PCREL
1498 reloc in the branch.
1500 If on the other hand, we are creating an executable, we
1501 may need to keep relocations for symbols satisfied by a
1502 dynamic library if we manage to avoid copy relocs for the
1505 && (sec->flags & SEC_ALLOC) != 0
1506 && (IS_ABSOLUTE_RELOC (r_type)
1509 || h->elf.root.type == bfd_link_hash_defweak
1510 || (h->elf.elf_link_hash_flags
1511 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
1513 && (sec->flags & SEC_ALLOC) != 0
1515 && (h->elf.root.type == bfd_link_hash_defweak
1516 || (h->elf.elf_link_hash_flags
1517 & ELF_LINK_HASH_DEF_REGULAR) == 0)))
1519 /* Create a reloc section in dynobj and make room for
1526 name = (bfd_elf_string_from_elf_section
1528 elf_elfheader (abfd)->e_shstrndx,
1529 elf_section_data (sec)->rel_hdr.sh_name));
1532 (*_bfd_error_handler)
1533 (_("Could not find relocation section for %s"),
1535 bfd_set_error (bfd_error_bad_value);
1539 if (htab->elf.dynobj == NULL)
1540 htab->elf.dynobj = abfd;
1542 dynobj = htab->elf.dynobj;
1543 sreloc = bfd_get_section_by_name (dynobj, name);
1548 sreloc = bfd_make_section (dynobj, name);
1549 flags = (SEC_HAS_CONTENTS | SEC_READONLY
1550 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1551 if ((sec->flags & SEC_ALLOC) != 0)
1552 flags |= SEC_ALLOC | SEC_LOAD;
1554 || !bfd_set_section_flags (dynobj, sreloc, flags)
1555 || !bfd_set_section_alignment (dynobj, sreloc, 2))
1559 elf_section_data (sec)->sreloc = sreloc;
1562 /* If this is a global symbol, we count the number of
1563 relocations we need for this symbol. */
1566 struct elf32_hppa_dyn_reloc_entry *p;
1569 if (p == NULL || p->sec != sec)
1571 p = ((struct elf32_hppa_dyn_reloc_entry *)
1572 bfd_alloc (htab->elf.dynobj,
1573 (bfd_size_type) sizeof *p));
1576 p->next = h->dyn_relocs;
1580 #if RELATIVE_DYNRELOCS
1581 p->relative_count = 0;
1586 #if RELATIVE_DYNRELOCS
1587 if (!IS_ABSOLUTE_RELOC (rtype))
1588 p->relative_count += 1;
1593 /* Track dynamic relocs needed for local syms too. */
1594 elf_section_data (sec)->local_dynrel += 1;
1603 /* Return the section that should be marked against garbage collection
1604 for a given relocation. */
1607 elf32_hppa_gc_mark_hook (abfd, info, rel, h, sym)
1609 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1610 Elf_Internal_Rela *rel;
1611 struct elf_link_hash_entry *h;
1612 Elf_Internal_Sym *sym;
1616 switch ((unsigned int) ELF32_R_TYPE (rel->r_info))
1618 case R_PARISC_GNU_VTINHERIT:
1619 case R_PARISC_GNU_VTENTRY:
1623 switch (h->root.type)
1625 case bfd_link_hash_defined:
1626 case bfd_link_hash_defweak:
1627 return h->root.u.def.section;
1629 case bfd_link_hash_common:
1630 return h->root.u.c.p->section;
1639 if (!(elf_bad_symtab (abfd)
1640 && ELF_ST_BIND (sym->st_info) != STB_LOCAL)
1641 && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE)
1642 && sym->st_shndx != SHN_COMMON))
1644 return bfd_section_from_elf_index (abfd, sym->st_shndx);
1651 /* Update the got and plt entry reference counts for the section being
1655 elf32_hppa_gc_sweep_hook (abfd, info, sec, relocs)
1657 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1659 const Elf_Internal_Rela *relocs;
1661 Elf_Internal_Shdr *symtab_hdr;
1662 struct elf_link_hash_entry **sym_hashes;
1663 bfd_signed_vma *local_got_refcounts;
1664 bfd_signed_vma *local_plt_refcounts;
1665 const Elf_Internal_Rela *rel, *relend;
1666 unsigned long r_symndx;
1667 struct elf_link_hash_entry *h;
1668 struct elf32_hppa_link_hash_table *htab;
1671 elf_section_data (sec)->local_dynrel = 0;
1673 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1674 sym_hashes = elf_sym_hashes (abfd);
1675 local_got_refcounts = elf_local_got_refcounts (abfd);
1676 local_plt_refcounts = local_got_refcounts;
1677 if (local_plt_refcounts != NULL)
1678 local_plt_refcounts += symtab_hdr->sh_info;
1679 htab = hppa_link_hash_table (info);
1680 dynobj = htab->elf.dynobj;
1684 relend = relocs + sec->reloc_count;
1685 for (rel = relocs; rel < relend; rel++)
1686 switch ((unsigned int) ELF32_R_TYPE (rel->r_info))
1688 case R_PARISC_DLTIND14F:
1689 case R_PARISC_DLTIND14R:
1690 case R_PARISC_DLTIND21L:
1691 r_symndx = ELF32_R_SYM (rel->r_info);
1692 if (r_symndx >= symtab_hdr->sh_info)
1694 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1695 if (h->got.refcount > 0)
1696 h->got.refcount -= 1;
1698 else if (local_got_refcounts != NULL)
1700 if (local_got_refcounts[r_symndx] > 0)
1701 local_got_refcounts[r_symndx] -= 1;
1705 case R_PARISC_PCREL12F:
1706 case R_PARISC_PCREL17C:
1707 case R_PARISC_PCREL17F:
1708 case R_PARISC_PCREL22F:
1709 r_symndx = ELF32_R_SYM (rel->r_info);
1710 if (r_symndx >= symtab_hdr->sh_info)
1712 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1713 if (h->plt.refcount > 0)
1714 h->plt.refcount -= 1;
1718 case R_PARISC_PLABEL14R:
1719 case R_PARISC_PLABEL21L:
1720 case R_PARISC_PLABEL32:
1721 r_symndx = ELF32_R_SYM (rel->r_info);
1722 if (r_symndx >= symtab_hdr->sh_info)
1724 struct elf32_hppa_link_hash_entry *eh;
1725 struct elf32_hppa_dyn_reloc_entry **pp;
1726 struct elf32_hppa_dyn_reloc_entry *p;
1728 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1730 if (h->plt.refcount > 0)
1731 h->plt.refcount -= 1;
1733 eh = (struct elf32_hppa_link_hash_entry *) h;
1735 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1738 #if RELATIVE_DYNRELOCS
1739 if (!IS_ABSOLUTE_RELOC (rtype))
1740 p->relative_count -= 1;
1748 else if (local_plt_refcounts != NULL)
1750 if (local_plt_refcounts[r_symndx] > 0)
1751 local_plt_refcounts[r_symndx] -= 1;
1755 case R_PARISC_DIR32:
1756 r_symndx = ELF32_R_SYM (rel->r_info);
1757 if (r_symndx >= symtab_hdr->sh_info)
1759 struct elf32_hppa_link_hash_entry *eh;
1760 struct elf32_hppa_dyn_reloc_entry **pp;
1761 struct elf32_hppa_dyn_reloc_entry *p;
1763 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1765 eh = (struct elf32_hppa_link_hash_entry *) h;
1767 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1770 #if RELATIVE_DYNRELOCS
1771 if (!IS_ABSOLUTE_RELOC (R_PARISC_DIR32))
1772 p->relative_count -= 1;
1789 /* Our own version of hide_symbol, so that we can keep plt entries for
1793 elf32_hppa_hide_symbol (info, h)
1794 struct bfd_link_info *info ATTRIBUTE_UNUSED;
1795 struct elf_link_hash_entry *h;
1797 if ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)
1799 if (! ((struct elf32_hppa_link_hash_entry *) h)->plabel)
1801 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
1802 h->plt.offset = (bfd_vma) -1;
1806 /* This is the condition under which elf32_hppa_finish_dynamic_symbol
1807 will be called from elflink.h. If elflink.h doesn't call our
1808 finish_dynamic_symbol routine, we'll need to do something about
1809 initializing any .plt and .got entries in elf32_hppa_relocate_section. */
1810 #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \
1812 && ((INFO)->shared \
1813 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
1814 && ((H)->dynindx != -1 \
1815 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
1817 /* Adjust a symbol defined by a dynamic object and referenced by a
1818 regular object. The current definition is in some section of the
1819 dynamic object, but we're not including those sections. We have to
1820 change the definition to something the rest of the link can
1824 elf32_hppa_adjust_dynamic_symbol (info, h)
1825 struct bfd_link_info *info;
1826 struct elf_link_hash_entry *h;
1828 struct elf32_hppa_link_hash_table *htab;
1829 struct elf32_hppa_link_hash_entry *eh;
1830 struct elf32_hppa_dyn_reloc_entry *p;
1832 unsigned int power_of_two;
1834 /* If this is a function, put it in the procedure linkage table. We
1835 will fill in the contents of the procedure linkage table later,
1836 when we know the address of the .got section. */
1837 if (h->type == STT_FUNC
1838 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
1841 && h->plt.refcount > 0
1842 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
1843 && (h->root.u.def.section->flags & SEC_HAS_GOT_REF) != 0)
1845 ((struct elf32_hppa_link_hash_entry *) h)->maybe_pic_call = 1;
1848 if (h->plt.refcount <= 0
1849 || ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
1850 && h->root.type != bfd_link_hash_defweak
1851 && ! ((struct elf32_hppa_link_hash_entry *) h)->plabel
1852 && (!info->shared || info->symbolic)))
1854 /* The .plt entry is not needed when:
1855 a) Garbage collection has removed all references to the
1857 b) We know for certain the symbol is defined in this
1858 object, and it's not a weak definition, nor is the symbol
1859 used by a plabel relocation. Either this object is the
1860 application or we are doing a shared symbolic link. */
1862 /* As a special sop to the hppa ABI, we keep a .plt entry
1863 for functions in sections containing PIC code. */
1864 if (((struct elf32_hppa_link_hash_entry *) h)->maybe_pic_call)
1865 ((struct elf32_hppa_link_hash_entry *) h)->pic_call = 1;
1868 h->plt.offset = (bfd_vma) -1;
1869 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
1876 h->plt.offset = (bfd_vma) -1;
1878 /* If this is a weak symbol, and there is a real definition, the
1879 processor independent code will have arranged for us to see the
1880 real definition first, and we can just use the same value. */
1881 if (h->weakdef != NULL)
1883 if (h->weakdef->root.type != bfd_link_hash_defined
1884 && h->weakdef->root.type != bfd_link_hash_defweak)
1886 h->root.u.def.section = h->weakdef->root.u.def.section;
1887 h->root.u.def.value = h->weakdef->root.u.def.value;
1891 /* This is a reference to a symbol defined by a dynamic object which
1892 is not a function. */
1894 /* If we are creating a shared library, we must presume that the
1895 only references to the symbol are via the global offset table.
1896 For such cases we need not do anything here; the relocations will
1897 be handled correctly by relocate_section. */
1901 /* If there are no references to this symbol that do not use the
1902 GOT, we don't need to generate a copy reloc. */
1903 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
1906 eh = (struct elf32_hppa_link_hash_entry *) h;
1907 for (p = eh->dyn_relocs; p != NULL; p = p->next)
1909 s = p->sec->output_section;
1910 if (s != NULL && (s->flags & SEC_READONLY) != 0)
1914 /* If we didn't find any dynamic relocs in read-only sections, then
1915 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
1918 h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
1922 /* We must allocate the symbol in our .dynbss section, which will
1923 become part of the .bss section of the executable. There will be
1924 an entry for this symbol in the .dynsym section. The dynamic
1925 object will contain position independent code, so all references
1926 from the dynamic object to this symbol will go through the global
1927 offset table. The dynamic linker will use the .dynsym entry to
1928 determine the address it must put in the global offset table, so
1929 both the dynamic object and the regular object will refer to the
1930 same memory location for the variable. */
1932 htab = hppa_link_hash_table (info);
1934 /* We must generate a COPY reloc to tell the dynamic linker to
1935 copy the initial value out of the dynamic object and into the
1936 runtime process image. */
1937 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1939 htab->srelbss->_raw_size += sizeof (Elf32_External_Rela);
1940 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
1943 /* We need to figure out the alignment required for this symbol. I
1944 have no idea how other ELF linkers handle this. */
1946 power_of_two = bfd_log2 (h->size);
1947 if (power_of_two > 3)
1950 /* Apply the required alignment. */
1952 s->_raw_size = BFD_ALIGN (s->_raw_size,
1953 (bfd_size_type) (1 << power_of_two));
1954 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
1956 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
1960 /* Define the symbol as being at this point in the section. */
1961 h->root.u.def.section = s;
1962 h->root.u.def.value = s->_raw_size;
1964 /* Increment the section size to make room for the symbol. */
1965 s->_raw_size += h->size;
1970 /* Called via elf_link_hash_traverse to create .plt entries for an
1971 application that uses statically linked PIC functions. Similar to
1972 the first part of elf32_hppa_adjust_dynamic_symbol. */
1975 hppa_handle_PIC_calls (h, inf)
1976 struct elf_link_hash_entry *h;
1977 PTR inf ATTRIBUTE_UNUSED;
1979 if (! (h->plt.refcount > 0
1980 && (h->root.type == bfd_link_hash_defined
1981 || h->root.type == bfd_link_hash_defweak)
1982 && (h->root.u.def.section->flags & SEC_HAS_GOT_REF) != 0))
1984 h->plt.offset = (bfd_vma) -1;
1985 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
1989 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
1990 ((struct elf32_hppa_link_hash_entry *) h)->maybe_pic_call = 1;
1991 ((struct elf32_hppa_link_hash_entry *) h)->pic_call = 1;
1996 /* Allocate space in .plt, .got and associated reloc sections for
2000 allocate_dynrelocs (h, inf)
2001 struct elf_link_hash_entry *h;
2004 struct bfd_link_info *info;
2005 struct elf32_hppa_link_hash_table *htab;
2007 struct elf32_hppa_link_hash_entry *eh;
2008 struct elf32_hppa_dyn_reloc_entry *p;
2010 if (h->root.type == bfd_link_hash_indirect
2011 || h->root.type == bfd_link_hash_warning)
2014 info = (struct bfd_link_info *) inf;
2015 htab = hppa_link_hash_table (info);
2016 if ((htab->elf.dynamic_sections_created
2017 && h->plt.refcount > 0)
2018 || ((struct elf32_hppa_link_hash_entry *) h)->pic_call)
2020 /* Make sure this symbol is output as a dynamic symbol.
2021 Undefined weak syms won't yet be marked as dynamic. */
2022 if (h->dynindx == -1
2023 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0
2024 && h->type != STT_PARISC_MILLI
2025 && !((struct elf32_hppa_link_hash_entry *) h)->pic_call)
2027 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
2031 if (((struct elf32_hppa_link_hash_entry *) h)->pic_call
2032 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, h))
2034 /* Make an entry in the .plt section. */
2036 h->plt.offset = s->_raw_size;
2037 if (PLABEL_PLT_ENTRY_SIZE != PLT_ENTRY_SIZE
2038 && ((struct elf32_hppa_link_hash_entry *) h)->plabel
2039 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
2041 /* Add some extra space for the dynamic linker to use. */
2042 s->_raw_size += PLABEL_PLT_ENTRY_SIZE;
2045 s->_raw_size += PLT_ENTRY_SIZE;
2047 if (! ((struct elf32_hppa_link_hash_entry *) h)->pic_call)
2049 /* We also need to make an entry in the .rela.plt section. */
2050 htab->srelplt->_raw_size += sizeof (Elf32_External_Rela);
2051 htab->need_plt_stub = 1;
2056 h->plt.offset = (bfd_vma) -1;
2057 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
2062 h->plt.offset = (bfd_vma) -1;
2063 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
2066 if (h->got.refcount > 0)
2070 /* Make sure this symbol is output as a dynamic symbol.
2071 Undefined weak syms won't yet be marked as dynamic. */
2072 if (h->dynindx == -1
2073 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0
2074 && h->type != STT_PARISC_MILLI)
2076 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
2081 h->got.offset = s->_raw_size;
2082 s->_raw_size += GOT_ENTRY_SIZE;
2083 dyn = htab->elf.dynamic_sections_created;
2084 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h))
2085 htab->srelgot->_raw_size += sizeof (Elf32_External_Rela);
2088 h->got.offset = (bfd_vma) -1;
2090 eh = (struct elf32_hppa_link_hash_entry *) h;
2091 if (eh->dyn_relocs == NULL)
2094 /* If this is a -Bsymbolic shared link, then we need to discard all
2095 space allocated for dynamic pc-relative relocs against symbols
2096 defined in a regular object. For the normal shared case, discard
2097 space for relocs that have become local due to symbol visibility
2101 #if RELATIVE_DYNRELOCS
2102 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
2103 && ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
2106 struct elf32_hppa_dyn_reloc_entry **pp;
2108 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2110 p->count -= p->relative_count;
2111 p->relative_count = 0;
2122 /* For the non-shared case, discard space for relocs against
2123 symbols which turn out to need copy relocs or are not
2125 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
2126 && (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
2127 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
2128 || (htab->elf.dynamic_sections_created
2129 && (h->root.type == bfd_link_hash_undefweak
2130 || h->root.type == bfd_link_hash_undefined))))
2132 /* Make sure this symbol is output as a dynamic symbol.
2133 Undefined weak syms won't yet be marked as dynamic. */
2134 if (h->dynindx == -1
2135 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0
2136 && h->type != STT_PARISC_MILLI)
2138 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
2142 /* If that succeeded, we know we'll be keeping all the
2144 if (h->dynindx != -1)
2148 eh->dyn_relocs = NULL;
2154 /* Finally, allocate space. */
2155 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2157 asection *sreloc = elf_section_data (p->sec)->sreloc;
2158 sreloc->_raw_size += p->count * sizeof (Elf32_External_Rela);
2164 /* This function is called via elf_link_hash_traverse to force
2165 millicode symbols local so they do not end up as globals in the
2166 dynamic symbol table. We ought to be able to do this in
2167 adjust_dynamic_symbol, but our adjust_dynamic_symbol is not called
2168 for all dynamic symbols. Arguably, this is a bug in
2169 elf_adjust_dynamic_symbol. */
2172 clobber_millicode_symbols (h, info)
2173 struct elf_link_hash_entry *h;
2174 struct bfd_link_info *info;
2176 /* We only want to remove these from the dynamic symbol table.
2177 Therefore we do not leave ELF_LINK_FORCED_LOCAL set. */
2178 if (h->type == STT_PARISC_MILLI)
2180 unsigned short oldflags = h->elf_link_hash_flags;
2181 h->elf_link_hash_flags |= ELF_LINK_FORCED_LOCAL;
2182 elf32_hppa_hide_symbol (info, h);
2183 h->elf_link_hash_flags &= ~ELF_LINK_FORCED_LOCAL;
2184 h->elf_link_hash_flags |= oldflags & ELF_LINK_FORCED_LOCAL;
2189 /* Find any dynamic relocs that apply to read-only sections. */
2192 readonly_dynrelocs (h, inf)
2193 struct elf_link_hash_entry *h;
2196 struct elf32_hppa_link_hash_entry *eh;
2197 struct elf32_hppa_dyn_reloc_entry *p;
2199 eh = (struct elf32_hppa_link_hash_entry *) h;
2200 for (p = eh->dyn_relocs; p != NULL; p = p->next)
2202 asection *s = p->sec->output_section;
2204 if (s != NULL && (s->flags & SEC_READONLY) != 0)
2206 struct bfd_link_info *info = (struct bfd_link_info *) inf;
2208 info->flags |= DF_TEXTREL;
2210 /* Not an error, just cut short the traversal. */
2217 /* Set the sizes of the dynamic sections. */
2220 elf32_hppa_size_dynamic_sections (output_bfd, info)
2221 bfd *output_bfd ATTRIBUTE_UNUSED;
2222 struct bfd_link_info *info;
2224 struct elf32_hppa_link_hash_table *htab;
2230 htab = hppa_link_hash_table (info);
2231 dynobj = htab->elf.dynobj;
2235 if (htab->elf.dynamic_sections_created)
2237 /* Set the contents of the .interp section to the interpreter. */
2240 s = bfd_get_section_by_name (dynobj, ".interp");
2243 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
2244 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2247 /* Force millicode symbols local. */
2248 elf_link_hash_traverse (&htab->elf,
2249 clobber_millicode_symbols,
2254 /* Run through the function symbols, looking for any that are
2255 PIC, and allocate space for the necessary .plt entries so
2256 that %r19 will be set up. */
2258 elf_link_hash_traverse (&htab->elf,
2259 hppa_handle_PIC_calls,
2263 /* Set up .got and .plt offsets for local syms, and space for local
2265 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2267 bfd_signed_vma *local_got;
2268 bfd_signed_vma *end_local_got;
2269 bfd_signed_vma *local_plt;
2270 bfd_signed_vma *end_local_plt;
2271 bfd_size_type locsymcount;
2272 Elf_Internal_Shdr *symtab_hdr;
2275 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2278 for (s = ibfd->sections; s != NULL; s = s->next)
2280 bfd_size_type count = elf_section_data (s)->local_dynrel;
2284 srel = elf_section_data (s)->sreloc;
2285 srel->_raw_size += count * sizeof (Elf32_External_Rela);
2289 local_got = elf_local_got_refcounts (ibfd);
2293 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2294 locsymcount = symtab_hdr->sh_info;
2295 end_local_got = local_got + locsymcount;
2297 srel = htab->srelgot;
2298 for (; local_got < end_local_got; ++local_got)
2302 *local_got = s->_raw_size;
2303 s->_raw_size += GOT_ENTRY_SIZE;
2305 srel->_raw_size += sizeof (Elf32_External_Rela);
2308 *local_got = (bfd_vma) -1;
2311 local_plt = end_local_got;
2312 end_local_plt = local_plt + locsymcount;
2313 if (! htab->elf.dynamic_sections_created)
2315 /* Won't be used, but be safe. */
2316 for (; local_plt < end_local_plt; ++local_plt)
2317 *local_plt = (bfd_vma) -1;
2322 srel = htab->srelplt;
2323 for (; local_plt < end_local_plt; ++local_plt)
2327 *local_plt = s->_raw_size;
2328 s->_raw_size += PLT_ENTRY_SIZE;
2330 srel->_raw_size += sizeof (Elf32_External_Rela);
2333 *local_plt = (bfd_vma) -1;
2338 /* Allocate global sym .plt and .got entries, and space for global
2339 sym dynamic relocs. */
2340 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
2342 /* The check_relocs and adjust_dynamic_symbol entry points have
2343 determined the sizes of the various dynamic sections. Allocate
2346 for (s = dynobj->sections; s != NULL; s = s->next)
2348 if ((s->flags & SEC_LINKER_CREATED) == 0)
2351 if (s == htab->splt)
2353 if (htab->need_plt_stub)
2355 /* Make space for the plt stub at the end of the .plt
2356 section. We want this stub right at the end, up
2357 against the .got section. */
2358 int gotalign = bfd_section_alignment (dynobj, htab->sgot);
2359 int pltalign = bfd_section_alignment (dynobj, s);
2362 if (gotalign > pltalign)
2363 bfd_set_section_alignment (dynobj, s, gotalign);
2364 mask = ((bfd_size_type) 1 << gotalign) - 1;
2365 s->_raw_size = (s->_raw_size + sizeof (plt_stub) + mask) & ~mask;
2368 else if (s == htab->sgot)
2370 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
2372 if (s->_raw_size != 0)
2374 /* Remember whether there are any reloc sections other
2376 if (s != htab->srelplt)
2379 /* We use the reloc_count field as a counter if we need
2380 to copy relocs into the output file. */
2386 /* It's not one of our sections, so don't allocate space. */
2390 if (s->_raw_size == 0)
2392 /* If we don't need this section, strip it from the
2393 output file. This is mostly to handle .rela.bss and
2394 .rela.plt. We must create both sections in
2395 create_dynamic_sections, because they must be created
2396 before the linker maps input sections to output
2397 sections. The linker does that before
2398 adjust_dynamic_symbol is called, and it is that
2399 function which decides whether anything needs to go
2400 into these sections. */
2401 _bfd_strip_section_from_output (info, s);
2405 /* Allocate memory for the section contents. Zero it, because
2406 we may not fill in all the reloc sections. */
2407 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
2408 if (s->contents == NULL && s->_raw_size != 0)
2412 if (htab->elf.dynamic_sections_created)
2414 /* Like IA-64 and HPPA64, always create a DT_PLTGOT. It
2415 actually has nothing to do with the PLT, it is how we
2416 communicate the LTP value of a load module to the dynamic
2418 #define add_dynamic_entry(TAG, VAL) \
2419 bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
2421 if (!add_dynamic_entry (DT_PLTGOT, 0))
2424 /* Add some entries to the .dynamic section. We fill in the
2425 values later, in elf32_hppa_finish_dynamic_sections, but we
2426 must add the entries now so that we get the correct size for
2427 the .dynamic section. The DT_DEBUG entry is filled in by the
2428 dynamic linker and used by the debugger. */
2431 if (!add_dynamic_entry (DT_DEBUG, 0))
2435 if (htab->srelplt->_raw_size != 0)
2437 if (!add_dynamic_entry (DT_PLTRELSZ, 0)
2438 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2439 || !add_dynamic_entry (DT_JMPREL, 0))
2445 if (!add_dynamic_entry (DT_RELA, 0)
2446 || !add_dynamic_entry (DT_RELASZ, 0)
2447 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
2450 /* If any dynamic relocs apply to a read-only section,
2451 then we need a DT_TEXTREL entry. */
2452 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, (PTR) info);
2454 if ((info->flags & DF_TEXTREL) != 0)
2456 if (!add_dynamic_entry (DT_TEXTREL, 0))
2461 #undef add_dynamic_entry
2466 /* External entry points for sizing and building linker stubs. */
2468 /* Determine and set the size of the stub section for a final link.
2470 The basic idea here is to examine all the relocations looking for
2471 PC-relative calls to a target that is unreachable with a "bl"
2475 elf32_hppa_size_stubs (output_bfd, stub_bfd, info, multi_subspace, group_size,
2476 add_stub_section, layout_sections_again)
2479 struct bfd_link_info *info;
2480 boolean multi_subspace;
2481 bfd_signed_vma group_size;
2482 asection * (*add_stub_section) PARAMS ((const char *, asection *));
2483 void (*layout_sections_again) PARAMS ((void));
2487 asection **input_list, **list;
2488 Elf_Internal_Sym *local_syms, **all_local_syms;
2489 unsigned int bfd_indx, bfd_count;
2490 int top_id, top_index;
2491 struct elf32_hppa_link_hash_table *htab;
2492 bfd_size_type stub_group_size;
2493 boolean stubs_always_before_branch;
2494 boolean stub_changed = 0;
2498 htab = hppa_link_hash_table (info);
2500 /* Stash our params away. */
2501 htab->stub_bfd = stub_bfd;
2502 htab->multi_subspace = multi_subspace;
2503 htab->add_stub_section = add_stub_section;
2504 htab->layout_sections_again = layout_sections_again;
2505 stubs_always_before_branch = group_size < 0;
2507 stub_group_size = -group_size;
2509 stub_group_size = group_size;
2510 if (stub_group_size == 1)
2512 /* Default values. */
2513 stub_group_size = 8000000;
2514 if (htab->has_17bit_branch || htab->multi_subspace)
2515 stub_group_size = 250000;
2516 if (htab->has_12bit_branch)
2517 stub_group_size = 7812;
2520 /* Count the number of input BFDs and find the top input section id. */
2521 for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
2523 input_bfd = input_bfd->link_next)
2526 for (section = input_bfd->sections;
2528 section = section->next)
2530 if (top_id < section->id)
2531 top_id = section->id;
2535 amt = sizeof (struct map_stub) * (top_id + 1);
2536 htab->stub_group = (struct map_stub *) bfd_zmalloc (amt);
2537 if (htab->stub_group == NULL)
2540 /* Make a list of input sections for each output section included in
2543 We can't use output_bfd->section_count here to find the top output
2544 section index as some sections may have been removed, and
2545 _bfd_strip_section_from_output doesn't renumber the indices. */
2546 for (section = output_bfd->sections, top_index = 0;
2548 section = section->next)
2550 if (top_index < section->index)
2551 top_index = section->index;
2554 amt = sizeof (asection *) * (top_index + 1);
2555 input_list = (asection **) bfd_malloc (amt);
2556 if (input_list == NULL)
2559 /* For sections we aren't interested in, mark their entries with a
2560 value we can check later. */
2561 list = input_list + top_index;
2563 *list = bfd_abs_section_ptr;
2564 while (list-- != input_list);
2566 for (section = output_bfd->sections;
2568 section = section->next)
2570 if ((section->flags & SEC_CODE) != 0)
2571 input_list[section->index] = NULL;
2574 /* Now actually build the lists. */
2575 for (input_bfd = info->input_bfds;
2577 input_bfd = input_bfd->link_next)
2579 for (section = input_bfd->sections;
2581 section = section->next)
2583 if (section->output_section != NULL
2584 && section->output_section->owner == output_bfd
2585 && section->output_section->index <= top_index)
2587 list = input_list + section->output_section->index;
2588 if (*list != bfd_abs_section_ptr)
2590 /* Steal the link_sec pointer for our list. */
2591 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
2592 /* This happens to make the list in reverse order,
2593 which is what we want. */
2594 PREV_SEC (section) = *list;
2601 /* See whether we can group stub sections together. Grouping stub
2602 sections may result in fewer stubs. More importantly, we need to
2603 put all .init* and .fini* stubs at the beginning of the .init or
2604 .fini output sections respectively, because glibc splits the
2605 _init and _fini functions into multiple parts. Putting a stub in
2606 the middle of a function is not a good idea. */
2607 list = input_list + top_index;
2610 asection *tail = *list;
2611 if (tail == bfd_abs_section_ptr)
2613 while (tail != NULL)
2617 bfd_size_type total;
2620 if (tail->_cooked_size)
2621 total = tail->_cooked_size;
2623 total = tail->_raw_size;
2624 while ((prev = PREV_SEC (curr)) != NULL
2625 && ((total += curr->output_offset - prev->output_offset)
2629 /* OK, the size from the start of CURR to the end is less
2630 than 250000 bytes and thus can be handled by one stub
2631 section. (or the tail section is itself larger than
2632 250000 bytes, in which case we may be toast.)
2633 We should really be keeping track of the total size of
2634 stubs added here, as stubs contribute to the final output
2635 section size. That's a little tricky, and this way will
2636 only break if stubs added total more than 12144 bytes, or
2637 1518 long branch stubs. It seems unlikely for more than
2638 1518 different functions to be called, especially from
2639 code only 250000 bytes long. */
2642 prev = PREV_SEC (tail);
2643 /* Set up this stub group. */
2644 htab->stub_group[tail->id].link_sec = curr;
2646 while (tail != curr && (tail = prev) != NULL);
2648 /* But wait, there's more! Input sections up to 250000
2649 bytes before the stub section can be handled by it too. */
2650 if (!stubs_always_before_branch)
2654 && ((total += tail->output_offset - prev->output_offset)
2658 prev = PREV_SEC (tail);
2659 htab->stub_group[tail->id].link_sec = curr;
2665 while (list-- != input_list);
2669 /* We want to read in symbol extension records only once. To do this
2670 we need to read in the local symbols in parallel and save them for
2671 later use; so hold pointers to the local symbols in an array. */
2672 amt = sizeof (Elf_Internal_Sym *) * bfd_count;
2673 all_local_syms = (Elf_Internal_Sym **) bfd_zmalloc (amt);
2674 if (all_local_syms == NULL)
2677 /* Walk over all the input BFDs, swapping in local symbols.
2678 If we are creating a shared library, create hash entries for the
2680 for (input_bfd = info->input_bfds, bfd_indx = 0;
2682 input_bfd = input_bfd->link_next, bfd_indx++)
2684 Elf_Internal_Shdr *symtab_hdr;
2685 Elf_Internal_Sym *isym;
2686 Elf32_External_Sym *ext_syms, *esym, *end_sy;
2687 bfd_size_type sec_size;
2689 /* We'll need the symbol table in a second. */
2690 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2691 if (symtab_hdr->sh_info == 0)
2694 /* We need an array of the local symbols attached to the input bfd.
2695 Unfortunately, we're going to have to read & swap them in. */
2696 sec_size = symtab_hdr->sh_info;
2697 sec_size *= sizeof (Elf_Internal_Sym);
2698 local_syms = (Elf_Internal_Sym *) bfd_malloc (sec_size);
2699 if (local_syms == NULL)
2701 goto error_ret_free_local;
2703 all_local_syms[bfd_indx] = local_syms;
2704 sec_size = symtab_hdr->sh_info;
2705 sec_size *= sizeof (Elf32_External_Sym);
2706 ext_syms = (Elf32_External_Sym *) bfd_malloc (sec_size);
2707 if (ext_syms == NULL)
2709 goto error_ret_free_local;
2712 if (bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0
2713 || (bfd_bread (ext_syms, sec_size, input_bfd) != sec_size))
2716 goto error_ret_free_local;
2719 /* Swap the local symbols in. */
2722 for (end_sy = esym + symtab_hdr->sh_info; esym < end_sy; esym++, isym++)
2723 bfd_elf32_swap_symbol_in (input_bfd, esym, isym);
2725 /* Now we can free the external symbols. */
2728 if (info->shared && htab->multi_subspace)
2730 struct elf_link_hash_entry **sym_hashes;
2731 struct elf_link_hash_entry **end_hashes;
2732 unsigned int symcount;
2734 symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
2735 - symtab_hdr->sh_info);
2736 sym_hashes = elf_sym_hashes (input_bfd);
2737 end_hashes = sym_hashes + symcount;
2739 /* Look through the global syms for functions; We need to
2740 build export stubs for all globally visible functions. */
2741 for (; sym_hashes < end_hashes; sym_hashes++)
2743 struct elf32_hppa_link_hash_entry *hash;
2745 hash = (struct elf32_hppa_link_hash_entry *) *sym_hashes;
2747 while (hash->elf.root.type == bfd_link_hash_indirect
2748 || hash->elf.root.type == bfd_link_hash_warning)
2749 hash = ((struct elf32_hppa_link_hash_entry *)
2750 hash->elf.root.u.i.link);
2752 /* At this point in the link, undefined syms have been
2753 resolved, so we need to check that the symbol was
2754 defined in this BFD. */
2755 if ((hash->elf.root.type == bfd_link_hash_defined
2756 || hash->elf.root.type == bfd_link_hash_defweak)
2757 && hash->elf.type == STT_FUNC
2758 && hash->elf.root.u.def.section->output_section != NULL
2759 && (hash->elf.root.u.def.section->output_section->owner
2761 && hash->elf.root.u.def.section->owner == input_bfd
2762 && (hash->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)
2763 && !(hash->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL)
2764 && ELF_ST_VISIBILITY (hash->elf.other) == STV_DEFAULT)
2767 const char *stub_name;
2768 struct elf32_hppa_stub_hash_entry *stub_entry;
2770 sec = hash->elf.root.u.def.section;
2771 stub_name = hash->elf.root.root.string;
2772 stub_entry = hppa_stub_hash_lookup (&htab->stub_hash_table,
2775 if (stub_entry == NULL)
2777 stub_entry = hppa_add_stub (stub_name, sec, htab);
2779 goto error_ret_free_local;
2781 stub_entry->target_value = hash->elf.root.u.def.value;
2782 stub_entry->target_section = hash->elf.root.u.def.section;
2783 stub_entry->stub_type = hppa_stub_export;
2784 stub_entry->h = hash;
2789 (*_bfd_error_handler) (_("%s: duplicate export stub %s"),
2790 bfd_archive_filename (input_bfd),
2802 for (input_bfd = info->input_bfds, bfd_indx = 0;
2804 input_bfd = input_bfd->link_next, bfd_indx++)
2806 Elf_Internal_Shdr *symtab_hdr;
2808 /* We'll need the symbol table in a second. */
2809 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2810 if (symtab_hdr->sh_info == 0)
2813 local_syms = all_local_syms[bfd_indx];
2815 /* Walk over each section attached to the input bfd. */
2816 for (section = input_bfd->sections;
2818 section = section->next)
2820 Elf_Internal_Shdr *input_rel_hdr;
2821 Elf32_External_Rela *external_relocs, *erelaend, *erela;
2822 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
2824 /* If there aren't any relocs, then there's nothing more
2826 if ((section->flags & SEC_RELOC) == 0
2827 || section->reloc_count == 0)
2830 /* If this section is a link-once section that will be
2831 discarded, then don't create any stubs. */
2832 if (section->output_section == NULL
2833 || section->output_section->owner != output_bfd)
2836 /* Allocate space for the external relocations. */
2837 amt = section->reloc_count;
2838 amt *= sizeof (Elf32_External_Rela);
2839 external_relocs = (Elf32_External_Rela *) bfd_malloc (amt);
2840 if (external_relocs == NULL)
2842 goto error_ret_free_local;
2845 /* Likewise for the internal relocations. */
2846 amt = section->reloc_count;
2847 amt *= sizeof (Elf_Internal_Rela);
2848 internal_relocs = (Elf_Internal_Rela *) bfd_malloc (amt);
2849 if (internal_relocs == NULL)
2851 free (external_relocs);
2852 goto error_ret_free_local;
2855 /* Read in the external relocs. */
2856 input_rel_hdr = &elf_section_data (section)->rel_hdr;
2857 if (bfd_seek (input_bfd, input_rel_hdr->sh_offset, SEEK_SET) != 0
2858 || bfd_bread (external_relocs,
2859 input_rel_hdr->sh_size,
2860 input_bfd) != input_rel_hdr->sh_size)
2862 free (external_relocs);
2863 error_ret_free_internal:
2864 free (internal_relocs);
2865 goto error_ret_free_local;
2868 /* Swap in the relocs. */
2869 erela = external_relocs;
2870 erelaend = erela + section->reloc_count;
2871 irela = internal_relocs;
2872 for (; erela < erelaend; erela++, irela++)
2873 bfd_elf32_swap_reloca_in (input_bfd, erela, irela);
2875 /* We're done with the external relocs, free them. */
2876 free (external_relocs);
2878 /* Now examine each relocation. */
2879 irela = internal_relocs;
2880 irelaend = irela + section->reloc_count;
2881 for (; irela < irelaend; irela++)
2883 unsigned int r_type, r_indx;
2884 enum elf32_hppa_stub_type stub_type;
2885 struct elf32_hppa_stub_hash_entry *stub_entry;
2888 bfd_vma destination;
2889 struct elf32_hppa_link_hash_entry *hash;
2891 const asection *id_sec;
2893 r_type = ELF32_R_TYPE (irela->r_info);
2894 r_indx = ELF32_R_SYM (irela->r_info);
2896 if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED)
2898 bfd_set_error (bfd_error_bad_value);
2899 goto error_ret_free_internal;
2902 /* Only look for stubs on call instructions. */
2903 if (r_type != (unsigned int) R_PARISC_PCREL12F
2904 && r_type != (unsigned int) R_PARISC_PCREL17F
2905 && r_type != (unsigned int) R_PARISC_PCREL22F)
2908 /* Now determine the call target, its name, value,
2914 if (r_indx < symtab_hdr->sh_info)
2916 /* It's a local symbol. */
2917 Elf_Internal_Sym *sym;
2918 Elf_Internal_Shdr *hdr;
2920 sym = local_syms + r_indx;
2921 hdr = elf_elfsections (input_bfd)[sym->st_shndx];
2922 sym_sec = hdr->bfd_section;
2923 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
2924 sym_value = sym->st_value;
2925 destination = (sym_value + irela->r_addend
2926 + sym_sec->output_offset
2927 + sym_sec->output_section->vma);
2931 /* It's an external symbol. */
2934 e_indx = r_indx - symtab_hdr->sh_info;
2935 hash = ((struct elf32_hppa_link_hash_entry *)
2936 elf_sym_hashes (input_bfd)[e_indx]);
2938 while (hash->elf.root.type == bfd_link_hash_indirect
2939 || hash->elf.root.type == bfd_link_hash_warning)
2940 hash = ((struct elf32_hppa_link_hash_entry *)
2941 hash->elf.root.u.i.link);
2943 if (hash->elf.root.type == bfd_link_hash_defined
2944 || hash->elf.root.type == bfd_link_hash_defweak)
2946 sym_sec = hash->elf.root.u.def.section;
2947 sym_value = hash->elf.root.u.def.value;
2948 if (sym_sec->output_section != NULL)
2949 destination = (sym_value + irela->r_addend
2950 + sym_sec->output_offset
2951 + sym_sec->output_section->vma);
2953 else if (hash->elf.root.type == bfd_link_hash_undefweak)
2958 else if (hash->elf.root.type == bfd_link_hash_undefined)
2961 && !info->no_undefined
2962 && (ELF_ST_VISIBILITY (hash->elf.other)
2968 bfd_set_error (bfd_error_bad_value);
2969 goto error_ret_free_internal;
2973 /* Determine what (if any) linker stub is needed. */
2974 stub_type = hppa_type_of_stub (section, irela, hash,
2976 if (stub_type == hppa_stub_none)
2979 /* Support for grouping stub sections. */
2980 id_sec = htab->stub_group[section->id].link_sec;
2982 /* Get the name of this stub. */
2983 stub_name = hppa_stub_name (id_sec, sym_sec, hash, irela);
2985 goto error_ret_free_internal;
2987 stub_entry = hppa_stub_hash_lookup (&htab->stub_hash_table,
2990 if (stub_entry != NULL)
2992 /* The proper stub has already been created. */
2997 stub_entry = hppa_add_stub (stub_name, section, htab);
2998 if (stub_entry == NULL)
3001 goto error_ret_free_local;
3004 stub_entry->target_value = sym_value;
3005 stub_entry->target_section = sym_sec;
3006 stub_entry->stub_type = stub_type;
3009 if (stub_type == hppa_stub_import)
3010 stub_entry->stub_type = hppa_stub_import_shared;
3011 else if (stub_type == hppa_stub_long_branch)
3012 stub_entry->stub_type = hppa_stub_long_branch_shared;
3014 stub_entry->h = hash;
3018 /* We're done with the internal relocs, free them. */
3019 free (internal_relocs);
3026 /* OK, we've added some stubs. Find out the new size of the
3028 for (stub_sec = htab->stub_bfd->sections;
3030 stub_sec = stub_sec->next)
3032 stub_sec->_raw_size = 0;
3033 stub_sec->_cooked_size = 0;
3036 bfd_hash_traverse (&htab->stub_hash_table, hppa_size_one_stub, htab);
3038 /* Ask the linker to do its stuff. */
3039 (*htab->layout_sections_again) ();
3045 error_ret_free_local:
3046 while (bfd_count-- > 0)
3047 if (all_local_syms[bfd_count])
3048 free (all_local_syms[bfd_count]);
3049 free (all_local_syms);
3054 /* For a final link, this function is called after we have sized the
3055 stubs to provide a value for __gp. */
3058 elf32_hppa_set_gp (abfd, info)
3060 struct bfd_link_info *info;
3062 struct elf32_hppa_link_hash_table *htab;
3063 struct elf_link_hash_entry *h;
3067 htab = hppa_link_hash_table (info);
3068 h = elf_link_hash_lookup (&htab->elf, "$global$", false, false, false);
3071 && (h->root.type == bfd_link_hash_defined
3072 || h->root.type == bfd_link_hash_defweak))
3074 gp_val = h->root.u.def.value;
3075 sec = h->root.u.def.section;
3079 /* Choose to point our LTP at, in this order, one of .plt, .got,
3080 or .data, if these sections exist. In the case of choosing
3081 .plt try to make the LTP ideal for addressing anywhere in the
3082 .plt or .got with a 14 bit signed offset. Typically, the end
3083 of the .plt is the start of the .got, so choose .plt + 0x2000
3084 if either the .plt or .got is larger than 0x2000. If both
3085 the .plt and .got are smaller than 0x2000, choose the end of
3086 the .plt section. */
3091 gp_val = sec->_raw_size;
3093 || (htab->sgot && htab->sgot->_raw_size > 0x2000))
3104 /* We know we don't have a .plt. If .got is large,
3106 if (sec->_raw_size > 0x2000)
3111 /* No .plt or .got. Who cares what the LTP is? */
3112 sec = bfd_get_section_by_name (abfd, ".data");
3118 h->root.type = bfd_link_hash_defined;
3119 h->root.u.def.value = gp_val;
3121 h->root.u.def.section = sec;
3123 h->root.u.def.section = bfd_abs_section_ptr;
3127 if (sec != NULL && sec->output_section != NULL)
3128 gp_val += sec->output_section->vma + sec->output_offset;
3130 elf_gp (abfd) = gp_val;
3134 /* Build all the stubs associated with the current output file. The
3135 stubs are kept in a hash table attached to the main linker hash
3136 table. We also set up the .plt entries for statically linked PIC
3137 functions here. This function is called via hppaelf_finish in the
3141 elf32_hppa_build_stubs (info)
3142 struct bfd_link_info *info;
3145 struct bfd_hash_table *table;
3146 struct elf32_hppa_link_hash_table *htab;
3148 htab = hppa_link_hash_table (info);
3150 for (stub_sec = htab->stub_bfd->sections;
3152 stub_sec = stub_sec->next)
3156 /* Allocate memory to hold the linker stubs. */
3157 size = stub_sec->_raw_size;
3158 stub_sec->contents = (unsigned char *) bfd_zalloc (htab->stub_bfd, size);
3159 if (stub_sec->contents == NULL && size != 0)
3161 stub_sec->_raw_size = 0;
3164 /* Build the stubs as directed by the stub hash table. */
3165 table = &htab->stub_hash_table;
3166 bfd_hash_traverse (table, hppa_build_one_stub, info);
3171 /* Perform a final link. */
3174 elf32_hppa_final_link (abfd, info)
3176 struct bfd_link_info *info;
3180 /* Invoke the regular ELF linker to do all the work. */
3181 if (!bfd_elf32_bfd_final_link (abfd, info))
3184 /* If we're producing a final executable, sort the contents of the
3185 unwind section. Magic section names, but this is much safer than
3186 having elf32_hppa_relocate_section remember where SEGREL32 relocs
3187 occurred. Consider what happens if someone inept creates a
3188 linker script that puts unwind information in .text. */
3189 s = bfd_get_section_by_name (abfd, ".PARISC.unwind");
3195 size = s->_raw_size;
3196 contents = bfd_malloc (size);
3197 if (contents == NULL)
3200 if (! bfd_get_section_contents (abfd, s, contents, (file_ptr) 0, size))
3203 qsort (contents, (size_t) (size / 16), 16, hppa_unwind_entry_compare);
3205 if (! bfd_set_section_contents (abfd, s, contents, (file_ptr) 0, size))
3211 /* Record the lowest address for the data and text segments. */
3214 hppa_record_segment_addr (abfd, section, data)
3215 bfd *abfd ATTRIBUTE_UNUSED;
3219 struct elf32_hppa_link_hash_table *htab;
3221 htab = (struct elf32_hppa_link_hash_table *) data;
3223 if ((section->flags & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
3225 bfd_vma value = section->vma - section->filepos;
3227 if ((section->flags & SEC_READONLY) != 0)
3229 if (value < htab->text_segment_base)
3230 htab->text_segment_base = value;
3234 if (value < htab->data_segment_base)
3235 htab->data_segment_base = value;
3240 /* Perform a relocation as part of a final link. */
3242 static bfd_reloc_status_type
3243 final_link_relocate (input_section, contents, rel, value, htab, sym_sec, h)
3244 asection *input_section;
3246 const Elf_Internal_Rela *rel;
3248 struct elf32_hppa_link_hash_table *htab;
3250 struct elf32_hppa_link_hash_entry *h;
3253 unsigned int r_type = ELF32_R_TYPE (rel->r_info);
3254 reloc_howto_type *howto = elf_hppa_howto_table + r_type;
3255 int r_format = howto->bitsize;
3256 enum hppa_reloc_field_selector_type_alt r_field;
3257 bfd *input_bfd = input_section->owner;
3258 bfd_vma offset = rel->r_offset;
3259 bfd_vma max_branch_offset = 0;
3260 bfd_byte *hit_data = contents + offset;
3261 bfd_signed_vma addend = rel->r_addend;
3263 struct elf32_hppa_stub_hash_entry *stub_entry = NULL;
3266 if (r_type == R_PARISC_NONE)
3267 return bfd_reloc_ok;
3269 insn = bfd_get_32 (input_bfd, hit_data);
3271 /* Find out where we are and where we're going. */
3272 location = (offset +
3273 input_section->output_offset +
3274 input_section->output_section->vma);
3278 case R_PARISC_PCREL12F:
3279 case R_PARISC_PCREL17F:
3280 case R_PARISC_PCREL22F:
3281 /* If this is a call to a function defined in another dynamic
3282 library, or if it is a call to a PIC function in the same
3283 object, or if this is a shared link and it is a call to a
3284 weak symbol which may or may not be in the same object, then
3285 find the import stub in the stub hash. */
3287 || sym_sec->output_section == NULL
3289 && ((h->maybe_pic_call
3290 && !(input_section->flags & SEC_HAS_GOT_REF))
3291 || (h->elf.root.type == bfd_link_hash_defweak
3292 && h->elf.dynindx != -1
3293 && h->elf.plt.offset != (bfd_vma) -1))))
3295 stub_entry = hppa_get_stub_entry (input_section, sym_sec,
3297 if (stub_entry != NULL)
3299 value = (stub_entry->stub_offset
3300 + stub_entry->stub_sec->output_offset
3301 + stub_entry->stub_sec->output_section->vma);
3304 else if (sym_sec == NULL && h != NULL
3305 && h->elf.root.type == bfd_link_hash_undefweak)
3307 /* It's OK if undefined weak. Calls to undefined weak
3308 symbols behave as if the "called" function
3309 immediately returns. We can thus call to a weak
3310 function without first checking whether the function
3316 return bfd_reloc_notsupported;
3320 case R_PARISC_PCREL21L:
3321 case R_PARISC_PCREL17C:
3322 case R_PARISC_PCREL17R:
3323 case R_PARISC_PCREL14R:
3324 case R_PARISC_PCREL14F:
3325 /* Make it a pc relative offset. */
3330 case R_PARISC_DPREL21L:
3331 case R_PARISC_DPREL14R:
3332 case R_PARISC_DPREL14F:
3333 /* For all the DP relative relocations, we need to examine the symbol's
3334 section. If it's a code section, then "data pointer relative" makes
3335 no sense. In that case we don't adjust the "value", and for 21 bit
3336 addil instructions, we change the source addend register from %dp to
3337 %r0. This situation commonly arises when a variable's "constness"
3338 is declared differently from the way the variable is defined. For
3339 instance: "extern int foo" with foo defined as "const int foo". */
3340 if (sym_sec == NULL)
3342 if ((sym_sec->flags & SEC_CODE) != 0)
3344 if ((insn & ((0x3f << 26) | (0x1f << 21)))
3345 == (((int) OP_ADDIL << 26) | (27 << 21)))
3347 insn &= ~ (0x1f << 21);
3348 #if 1 /* debug them. */
3349 (*_bfd_error_handler)
3350 (_("%s(%s+0x%lx): fixing %s"),
3351 bfd_archive_filename (input_bfd),
3352 input_section->name,
3353 (long) rel->r_offset,
3357 /* Now try to make things easy for the dynamic linker. */
3363 case R_PARISC_DLTIND21L:
3364 case R_PARISC_DLTIND14R:
3365 case R_PARISC_DLTIND14F:
3366 value -= elf_gp (input_section->output_section->owner);
3369 case R_PARISC_SEGREL32:
3370 if ((sym_sec->flags & SEC_CODE) != 0)
3371 value -= htab->text_segment_base;
3373 value -= htab->data_segment_base;
3382 case R_PARISC_DIR32:
3383 case R_PARISC_DIR14F:
3384 case R_PARISC_DIR17F:
3385 case R_PARISC_PCREL17C:
3386 case R_PARISC_PCREL14F:
3387 case R_PARISC_DPREL14F:
3388 case R_PARISC_PLABEL32:
3389 case R_PARISC_DLTIND14F:
3390 case R_PARISC_SEGBASE:
3391 case R_PARISC_SEGREL32:
3395 case R_PARISC_DIR21L:
3396 case R_PARISC_PCREL21L:
3397 case R_PARISC_DPREL21L:
3398 case R_PARISC_PLABEL21L:
3399 case R_PARISC_DLTIND21L:
3403 case R_PARISC_DIR17R:
3404 case R_PARISC_PCREL17R:
3405 case R_PARISC_DIR14R:
3406 case R_PARISC_PCREL14R:
3407 case R_PARISC_DPREL14R:
3408 case R_PARISC_PLABEL14R:
3409 case R_PARISC_DLTIND14R:
3413 case R_PARISC_PCREL12F:
3414 case R_PARISC_PCREL17F:
3415 case R_PARISC_PCREL22F:
3418 if (r_type == (unsigned int) R_PARISC_PCREL17F)
3420 max_branch_offset = (1 << (17-1)) << 2;
3422 else if (r_type == (unsigned int) R_PARISC_PCREL12F)
3424 max_branch_offset = (1 << (12-1)) << 2;
3428 max_branch_offset = (1 << (22-1)) << 2;
3431 /* sym_sec is NULL on undefined weak syms or when shared on
3432 undefined syms. We've already checked for a stub for the
3433 shared undefined case. */
3434 if (sym_sec == NULL)
3437 /* If the branch is out of reach, then redirect the
3438 call to the local stub for this function. */
3439 if (value + addend + max_branch_offset >= 2*max_branch_offset)
3441 stub_entry = hppa_get_stub_entry (input_section, sym_sec,
3443 if (stub_entry == NULL)
3444 return bfd_reloc_notsupported;
3446 /* Munge up the value and addend so that we call the stub
3447 rather than the procedure directly. */
3448 value = (stub_entry->stub_offset
3449 + stub_entry->stub_sec->output_offset
3450 + stub_entry->stub_sec->output_section->vma
3456 /* Something we don't know how to handle. */
3458 return bfd_reloc_notsupported;
3461 /* Make sure we can reach the stub. */
3462 if (max_branch_offset != 0
3463 && value + addend + max_branch_offset >= 2*max_branch_offset)
3465 (*_bfd_error_handler)
3466 (_("%s(%s+0x%lx): cannot reach %s, recompile with -ffunction-sections"),
3467 bfd_archive_filename (input_bfd),
3468 input_section->name,
3469 (long) rel->r_offset,
3470 stub_entry->root.string);
3471 return bfd_reloc_notsupported;
3474 val = hppa_field_adjust (value, addend, r_field);
3478 case R_PARISC_PCREL12F:
3479 case R_PARISC_PCREL17C:
3480 case R_PARISC_PCREL17F:
3481 case R_PARISC_PCREL17R:
3482 case R_PARISC_PCREL22F:
3483 case R_PARISC_DIR17F:
3484 case R_PARISC_DIR17R:
3485 /* This is a branch. Divide the offset by four.
3486 Note that we need to decide whether it's a branch or
3487 otherwise by inspecting the reloc. Inspecting insn won't
3488 work as insn might be from a .word directive. */
3496 insn = hppa_rebuild_insn (insn, val, r_format);
3498 /* Update the instruction word. */
3499 bfd_put_32 (input_bfd, (bfd_vma) insn, hit_data);
3500 return bfd_reloc_ok;
3503 /* Relocate an HPPA ELF section. */
3506 elf32_hppa_relocate_section (output_bfd, info, input_bfd, input_section,
3507 contents, relocs, local_syms, local_sections)
3509 struct bfd_link_info *info;
3511 asection *input_section;
3513 Elf_Internal_Rela *relocs;
3514 Elf_Internal_Sym *local_syms;
3515 asection **local_sections;
3517 bfd_vma *local_got_offsets;
3518 struct elf32_hppa_link_hash_table *htab;
3519 Elf_Internal_Shdr *symtab_hdr;
3520 Elf_Internal_Rela *rel;
3521 Elf_Internal_Rela *relend;
3523 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3525 htab = hppa_link_hash_table (info);
3526 local_got_offsets = elf_local_got_offsets (input_bfd);
3529 relend = relocs + input_section->reloc_count;
3530 for (; rel < relend; rel++)
3532 unsigned int r_type;
3533 reloc_howto_type *howto;
3534 unsigned int r_symndx;
3535 struct elf32_hppa_link_hash_entry *h;
3536 Elf_Internal_Sym *sym;
3539 bfd_reloc_status_type r;
3540 const char *sym_name;
3544 r_type = ELF32_R_TYPE (rel->r_info);
3545 if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED)
3547 bfd_set_error (bfd_error_bad_value);
3550 if (r_type == (unsigned int) R_PARISC_GNU_VTENTRY
3551 || r_type == (unsigned int) R_PARISC_GNU_VTINHERIT)
3554 r_symndx = ELF32_R_SYM (rel->r_info);
3556 if (info->relocateable)
3558 /* This is a relocatable link. We don't have to change
3559 anything, unless the reloc is against a section symbol,
3560 in which case we have to adjust according to where the
3561 section symbol winds up in the output section. */
3562 if (r_symndx < symtab_hdr->sh_info)
3564 sym = local_syms + r_symndx;
3565 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
3567 sym_sec = local_sections[r_symndx];
3568 rel->r_addend += sym_sec->output_offset;
3574 /* This is a final link. */
3578 if (r_symndx < symtab_hdr->sh_info)
3580 /* This is a local symbol, h defaults to NULL. */
3581 sym = local_syms + r_symndx;
3582 sym_sec = local_sections[r_symndx];
3583 relocation = ((ELF_ST_TYPE (sym->st_info) == STT_SECTION
3584 ? 0 : sym->st_value)
3585 + sym_sec->output_offset
3586 + sym_sec->output_section->vma);
3592 /* It's a global; Find its entry in the link hash. */
3593 indx = r_symndx - symtab_hdr->sh_info;
3594 h = ((struct elf32_hppa_link_hash_entry *)
3595 elf_sym_hashes (input_bfd)[indx]);
3596 while (h->elf.root.type == bfd_link_hash_indirect
3597 || h->elf.root.type == bfd_link_hash_warning)
3598 h = (struct elf32_hppa_link_hash_entry *) h->elf.root.u.i.link;
3601 if (h->elf.root.type == bfd_link_hash_defined
3602 || h->elf.root.type == bfd_link_hash_defweak)
3604 sym_sec = h->elf.root.u.def.section;
3605 /* If sym_sec->output_section is NULL, then it's a
3606 symbol defined in a shared library. */
3607 if (sym_sec->output_section != NULL)
3608 relocation = (h->elf.root.u.def.value
3609 + sym_sec->output_offset
3610 + sym_sec->output_section->vma);
3612 else if (h->elf.root.type == bfd_link_hash_undefweak)
3614 else if (info->shared && !info->no_undefined
3615 && ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
3616 && h->elf.type != STT_PARISC_MILLI)
3618 if (info->symbolic && !info->allow_shlib_undefined)
3619 if (!((*info->callbacks->undefined_symbol)
3620 (info, h->elf.root.root.string, input_bfd,
3621 input_section, rel->r_offset, false)))
3626 if (!((*info->callbacks->undefined_symbol)
3627 (info, h->elf.root.root.string, input_bfd,
3628 input_section, rel->r_offset, true)))
3633 /* Do any required modifications to the relocation value, and
3634 determine what types of dynamic info we need to output, if
3639 case R_PARISC_DLTIND14F:
3640 case R_PARISC_DLTIND14R:
3641 case R_PARISC_DLTIND21L:
3642 /* Relocation is to the entry for this symbol in the global
3648 off = h->elf.got.offset;
3649 dyn = htab->elf.dynamic_sections_created;
3650 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, &h->elf))
3652 /* This is actually a static link, or it is a
3653 -Bsymbolic link and the symbol is defined
3654 locally, or the symbol was forced to be local
3655 because of a version file. We must initialize
3656 this entry in the global offset table. Since the
3657 offset must always be a multiple of 4, we use the
3658 least significant bit to record whether we have
3659 initialized it already.
3661 When doing a dynamic link, we create a .rela.got
3662 relocation entry to initialize the value. This
3663 is done in the finish_dynamic_symbol routine. */
3668 bfd_put_32 (output_bfd, relocation,
3669 htab->sgot->contents + off);
3670 h->elf.got.offset |= 1;
3676 /* Local symbol case. */
3677 if (local_got_offsets == NULL)
3680 off = local_got_offsets[r_symndx];
3682 /* The offset must always be a multiple of 4. We use
3683 the least significant bit to record whether we have
3684 already generated the necessary reloc. */
3689 bfd_put_32 (output_bfd, relocation,
3690 htab->sgot->contents + off);
3694 /* Output a dynamic relocation for this GOT
3695 entry. In this case it is relative to the
3696 base of the object because the symbol index
3698 Elf_Internal_Rela outrel;
3699 asection *srelgot = htab->srelgot;
3700 Elf32_External_Rela *loc;
3702 outrel.r_offset = (off
3703 + htab->sgot->output_offset
3704 + htab->sgot->output_section->vma);
3705 outrel.r_info = ELF32_R_INFO (0, R_PARISC_DIR32);
3706 outrel.r_addend = relocation;
3707 loc = (Elf32_External_Rela *) srelgot->contents;
3708 loc += srelgot->reloc_count++;
3709 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3712 local_got_offsets[r_symndx] |= 1;
3716 if (off >= (bfd_vma) -2)
3719 /* Add the base of the GOT to the relocation value. */
3721 + htab->sgot->output_offset
3722 + htab->sgot->output_section->vma);
3725 case R_PARISC_SEGREL32:
3726 /* If this is the first SEGREL relocation, then initialize
3727 the segment base values. */
3728 if (htab->text_segment_base == (bfd_vma) -1)
3729 bfd_map_over_sections (output_bfd, hppa_record_segment_addr, htab);
3732 case R_PARISC_PLABEL14R:
3733 case R_PARISC_PLABEL21L:
3734 case R_PARISC_PLABEL32:
3735 if (htab->elf.dynamic_sections_created)
3737 /* If we have a global symbol with a PLT slot, then
3738 redirect this relocation to it. */
3741 off = h->elf.plt.offset;
3742 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, &h->elf))
3744 /* In a non-shared link, adjust_dynamic_symbols
3745 isn't called for symbols forced local. We
3746 need to write out the plt entry here. */
3751 bfd_put_32 (output_bfd,
3753 htab->splt->contents + off);
3754 bfd_put_32 (output_bfd,
3755 elf_gp (htab->splt->output_section->owner),
3756 htab->splt->contents + off + 4);
3757 h->elf.plt.offset |= 1;
3763 bfd_vma *local_plt_offsets;
3765 if (local_got_offsets == NULL)
3768 local_plt_offsets = local_got_offsets + symtab_hdr->sh_info;
3769 off = local_plt_offsets[r_symndx];
3771 /* As for the local .got entry case, we use the last
3772 bit to record whether we've already initialised
3773 this local .plt entry. */
3778 bfd_put_32 (output_bfd,
3780 htab->splt->contents + off);
3781 bfd_put_32 (output_bfd,
3782 elf_gp (htab->splt->output_section->owner),
3783 htab->splt->contents + off + 4);
3787 /* Output a dynamic IPLT relocation for this
3789 Elf_Internal_Rela outrel;
3790 asection *srelplt = htab->srelplt;
3791 Elf32_External_Rela *loc;
3793 outrel.r_offset = (off
3794 + htab->splt->output_offset
3795 + htab->splt->output_section->vma);
3796 outrel.r_info = ELF32_R_INFO (0, R_PARISC_IPLT);
3797 outrel.r_addend = relocation;
3798 loc = (Elf32_External_Rela *) srelplt->contents;
3799 loc += srelplt->reloc_count++;
3800 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3803 local_plt_offsets[r_symndx] |= 1;
3807 if (off >= (bfd_vma) -2)
3810 /* PLABELs contain function pointers. Relocation is to
3811 the entry for the function in the .plt. The magic +2
3812 offset signals to $$dyncall that the function pointer
3813 is in the .plt and thus has a gp pointer too.
3814 Exception: Undefined PLABELs should have a value of
3817 || (h->elf.root.type != bfd_link_hash_undefweak
3818 && h->elf.root.type != bfd_link_hash_undefined))
3821 + htab->splt->output_offset
3822 + htab->splt->output_section->vma
3827 /* Fall through and possibly emit a dynamic relocation. */
3829 case R_PARISC_DIR17F:
3830 case R_PARISC_DIR17R:
3831 case R_PARISC_DIR14F:
3832 case R_PARISC_DIR14R:
3833 case R_PARISC_DIR21L:
3834 case R_PARISC_DPREL14F:
3835 case R_PARISC_DPREL14R:
3836 case R_PARISC_DPREL21L:
3837 case R_PARISC_DIR32:
3838 /* The reloc types handled here and this conditional
3839 expression must match the code in ..check_relocs and
3840 ..discard_relocs. ie. We need exactly the same condition
3841 as in ..check_relocs, with some extra conditions (dynindx
3842 test in this case) to cater for relocs removed by
3843 ..discard_relocs. If you squint, the non-shared test
3844 here does indeed match the one in ..check_relocs, the
3845 difference being that here we test DEF_DYNAMIC as well as
3846 !DEF_REGULAR. All common syms end up with !DEF_REGULAR,
3847 which is why we can't use just that test here.
3848 Conversely, DEF_DYNAMIC can't be used in check_relocs as
3849 there all files have not been loaded. */
3851 && (input_section->flags & SEC_ALLOC) != 0
3852 && (IS_ABSOLUTE_RELOC (r_type)
3854 && h->elf.dynindx != -1
3856 || (h->elf.elf_link_hash_flags
3857 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
3859 && (input_section->flags & SEC_ALLOC) != 0
3861 && h->elf.dynindx != -1
3862 && (h->elf.elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
3863 && (((h->elf.elf_link_hash_flags
3864 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
3865 && (h->elf.elf_link_hash_flags
3866 & ELF_LINK_HASH_DEF_REGULAR) == 0)
3867 || h->elf.root.type == bfd_link_hash_undefweak
3868 || h->elf.root.type == bfd_link_hash_undefined)))
3870 Elf_Internal_Rela outrel;
3873 Elf32_External_Rela *loc;
3875 /* When generating a shared object, these relocations
3876 are copied into the output file to be resolved at run
3879 outrel.r_offset = rel->r_offset;
3880 outrel.r_addend = rel->r_addend;
3882 if (elf_section_data (input_section)->stab_info != NULL)
3884 off = (_bfd_stab_section_offset
3885 (output_bfd, &htab->elf.stab_info,
3887 &elf_section_data (input_section)->stab_info,
3889 if (off == (bfd_vma) -1)
3891 outrel.r_offset = off;
3894 outrel.r_offset += (input_section->output_offset
3895 + input_section->output_section->vma);
3899 memset (&outrel, 0, sizeof (outrel));
3902 && h->elf.dynindx != -1
3904 || !IS_ABSOLUTE_RELOC (r_type)
3907 || (h->elf.elf_link_hash_flags
3908 & ELF_LINK_HASH_DEF_REGULAR) == 0))
3910 outrel.r_info = ELF32_R_INFO (h->elf.dynindx, r_type);
3912 else /* It's a local symbol, or one marked to become local. */
3916 /* Add the absolute offset of the symbol. */
3917 outrel.r_addend += relocation;
3919 /* Global plabels need to be processed by the
3920 dynamic linker so that functions have at most one
3921 fptr. For this reason, we need to differentiate
3922 between global and local plabels, which we do by
3923 providing the function symbol for a global plabel
3924 reloc, and no symbol for local plabels. */
3927 && sym_sec->output_section != NULL
3928 && ! bfd_is_abs_section (sym_sec))
3930 indx = elf_section_data (sym_sec->output_section)->dynindx;
3931 /* We are turning this relocation into one
3932 against a section symbol, so subtract out the
3933 output section's address but not the offset
3934 of the input section in the output section. */
3935 outrel.r_addend -= sym_sec->output_section->vma;
3938 outrel.r_info = ELF32_R_INFO (indx, r_type);
3941 /* EH info can cause unaligned DIR32 relocs.
3942 Tweak the reloc type for the dynamic linker. */
3943 if (r_type == R_PARISC_DIR32 && (outrel.r_offset & 3) != 0)
3944 outrel.r_info = ELF32_R_INFO (ELF32_R_SYM (outrel.r_info),
3947 sreloc = elf_section_data (input_section)->sreloc;
3951 loc = (Elf32_External_Rela *) sreloc->contents;
3952 loc += sreloc->reloc_count++;
3953 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3961 r = final_link_relocate (input_section, contents, rel, relocation,
3964 if (r == bfd_reloc_ok)
3968 sym_name = h->elf.root.root.string;
3971 sym_name = bfd_elf_string_from_elf_section (input_bfd,
3972 symtab_hdr->sh_link,
3974 if (sym_name == NULL)
3976 if (*sym_name == '\0')
3977 sym_name = bfd_section_name (input_bfd, sym_sec);
3980 howto = elf_hppa_howto_table + r_type;
3982 if (r == bfd_reloc_undefined || r == bfd_reloc_notsupported)
3984 (*_bfd_error_handler)
3985 (_("%s(%s+0x%lx): cannot handle %s for %s"),
3986 bfd_archive_filename (input_bfd),
3987 input_section->name,
3988 (long) rel->r_offset,
3991 bfd_set_error (bfd_error_bad_value);
3996 if (!((*info->callbacks->reloc_overflow)
3997 (info, sym_name, howto->name, (bfd_vma) 0,
3998 input_bfd, input_section, rel->r_offset)))
4006 /* Comparison function for qsort to sort unwind section during a
4010 hppa_unwind_entry_compare (a, b)
4014 const bfd_byte *ap, *bp;
4015 unsigned long av, bv;
4017 ap = (const bfd_byte *) a;
4018 av = (unsigned long) ap[0] << 24;
4019 av |= (unsigned long) ap[1] << 16;
4020 av |= (unsigned long) ap[2] << 8;
4021 av |= (unsigned long) ap[3];
4023 bp = (const bfd_byte *) b;
4024 bv = (unsigned long) bp[0] << 24;
4025 bv |= (unsigned long) bp[1] << 16;
4026 bv |= (unsigned long) bp[2] << 8;
4027 bv |= (unsigned long) bp[3];
4029 return av < bv ? -1 : av > bv ? 1 : 0;
4032 /* Finish up dynamic symbol handling. We set the contents of various
4033 dynamic sections here. */
4036 elf32_hppa_finish_dynamic_symbol (output_bfd, info, h, sym)
4038 struct bfd_link_info *info;
4039 struct elf_link_hash_entry *h;
4040 Elf_Internal_Sym *sym;
4042 struct elf32_hppa_link_hash_table *htab;
4044 htab = hppa_link_hash_table (info);
4046 if (h->plt.offset != (bfd_vma) -1)
4050 if (h->plt.offset & 1)
4053 /* This symbol has an entry in the procedure linkage table. Set
4056 The format of a plt entry is
4061 if (h->root.type == bfd_link_hash_defined
4062 || h->root.type == bfd_link_hash_defweak)
4064 value = h->root.u.def.value;
4065 if (h->root.u.def.section->output_section != NULL)
4066 value += (h->root.u.def.section->output_offset
4067 + h->root.u.def.section->output_section->vma);
4070 if (! ((struct elf32_hppa_link_hash_entry *) h)->pic_call)
4072 Elf_Internal_Rela rel;
4073 Elf32_External_Rela *loc;
4075 /* Create a dynamic IPLT relocation for this entry. */
4076 rel.r_offset = (h->plt.offset
4077 + htab->splt->output_offset
4078 + htab->splt->output_section->vma);
4079 if (! ((struct elf32_hppa_link_hash_entry *) h)->plt_abs
4080 && h->dynindx != -1)
4082 /* To support lazy linking, the function pointer is
4083 initialised to point to a special stub stored at the
4084 end of the .plt. This is not done for plt entries
4085 with a base-relative dynamic relocation. */
4086 value = (htab->splt->output_offset
4087 + htab->splt->output_section->vma
4088 + htab->splt->_raw_size
4091 rel.r_info = ELF32_R_INFO (h->dynindx, R_PARISC_IPLT);
4096 /* This symbol has been marked to become local, and is
4097 used by a plabel so must be kept in the .plt. */
4098 rel.r_info = ELF32_R_INFO (0, R_PARISC_IPLT);
4099 rel.r_addend = value;
4102 loc = (Elf32_External_Rela *) htab->srelplt->contents;
4103 loc += htab->srelplt->reloc_count++;
4104 bfd_elf32_swap_reloca_out (htab->splt->output_section->owner,
4108 bfd_put_32 (htab->splt->owner,
4110 htab->splt->contents + h->plt.offset);
4111 bfd_put_32 (htab->splt->owner,
4112 elf_gp (htab->splt->output_section->owner),
4113 htab->splt->contents + h->plt.offset + 4);
4114 if (PLABEL_PLT_ENTRY_SIZE != PLT_ENTRY_SIZE
4115 && ((struct elf32_hppa_link_hash_entry *) h)->plabel
4116 && h->dynindx != -1)
4118 memset (htab->splt->contents + h->plt.offset + 8,
4119 0, PLABEL_PLT_ENTRY_SIZE - PLT_ENTRY_SIZE);
4122 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
4124 /* Mark the symbol as undefined, rather than as defined in
4125 the .plt section. Leave the value alone. */
4126 sym->st_shndx = SHN_UNDEF;
4130 if (h->got.offset != (bfd_vma) -1)
4132 Elf_Internal_Rela rel;
4133 Elf32_External_Rela *loc;
4135 /* This symbol has an entry in the global offset table. Set it
4138 rel.r_offset = ((h->got.offset &~ (bfd_vma) 1)
4139 + htab->sgot->output_offset
4140 + htab->sgot->output_section->vma);
4142 /* If this is a -Bsymbolic link and the symbol is defined
4143 locally or was forced to be local because of a version file,
4144 we just want to emit a RELATIVE reloc. The entry in the
4145 global offset table will already have been initialized in the
4146 relocate_section function. */
4148 && (info->symbolic || h->dynindx == -1)
4149 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
4151 rel.r_info = ELF32_R_INFO (0, R_PARISC_DIR32);
4152 rel.r_addend = (h->root.u.def.value
4153 + h->root.u.def.section->output_offset
4154 + h->root.u.def.section->output_section->vma);
4158 if ((h->got.offset & 1) != 0)
4160 bfd_put_32 (output_bfd, (bfd_vma) 0,
4161 htab->sgot->contents + h->got.offset);
4162 rel.r_info = ELF32_R_INFO (h->dynindx, R_PARISC_DIR32);
4166 loc = (Elf32_External_Rela *) htab->srelgot->contents;
4167 loc += htab->srelgot->reloc_count++;
4168 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
4171 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
4174 Elf_Internal_Rela rel;
4175 Elf32_External_Rela *loc;
4177 /* This symbol needs a copy reloc. Set it up. */
4179 if (! (h->dynindx != -1
4180 && (h->root.type == bfd_link_hash_defined
4181 || h->root.type == bfd_link_hash_defweak)))
4186 rel.r_offset = (h->root.u.def.value
4187 + h->root.u.def.section->output_offset
4188 + h->root.u.def.section->output_section->vma);
4190 rel.r_info = ELF32_R_INFO (h->dynindx, R_PARISC_COPY);
4191 loc = (Elf32_External_Rela *) s->contents + s->reloc_count++;
4192 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
4195 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
4196 if (h->root.root.string[0] == '_'
4197 && (strcmp (h->root.root.string, "_DYNAMIC") == 0
4198 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0))
4200 sym->st_shndx = SHN_ABS;
4206 /* Used to decide how to sort relocs in an optimal manner for the
4207 dynamic linker, before writing them out. */
4209 static enum elf_reloc_type_class
4210 elf32_hppa_reloc_type_class (rela)
4211 const Elf_Internal_Rela *rela;
4213 if (ELF32_R_SYM (rela->r_info) == 0)
4214 return reloc_class_relative;
4216 switch ((int) ELF32_R_TYPE (rela->r_info))
4219 return reloc_class_plt;
4221 return reloc_class_copy;
4223 return reloc_class_normal;
4227 /* Finish up the dynamic sections. */
4230 elf32_hppa_finish_dynamic_sections (output_bfd, info)
4232 struct bfd_link_info *info;
4235 struct elf32_hppa_link_hash_table *htab;
4238 htab = hppa_link_hash_table (info);
4239 dynobj = htab->elf.dynobj;
4241 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4243 if (htab->elf.dynamic_sections_created)
4245 Elf32_External_Dyn *dyncon, *dynconend;
4250 dyncon = (Elf32_External_Dyn *) sdyn->contents;
4251 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
4252 for (; dyncon < dynconend; dyncon++)
4254 Elf_Internal_Dyn dyn;
4257 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4265 /* Use PLTGOT to set the GOT register. */
4266 dyn.d_un.d_ptr = elf_gp (output_bfd);
4271 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4276 if (s->_cooked_size != 0)
4277 dyn.d_un.d_val = s->_cooked_size;
4279 dyn.d_un.d_val = s->_raw_size;
4283 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4287 if (htab->sgot != NULL && htab->sgot->_raw_size != 0)
4289 /* Fill in the first entry in the global offset table.
4290 We use it to point to our dynamic section, if we have one. */
4291 bfd_put_32 (output_bfd,
4293 ? sdyn->output_section->vma + sdyn->output_offset
4295 htab->sgot->contents);
4297 /* The second entry is reserved for use by the dynamic linker. */
4298 memset (htab->sgot->contents + GOT_ENTRY_SIZE, 0, GOT_ENTRY_SIZE);
4300 /* Set .got entry size. */
4301 elf_section_data (htab->sgot->output_section)
4302 ->this_hdr.sh_entsize = GOT_ENTRY_SIZE;
4305 if (htab->splt != NULL && htab->splt->_raw_size != 0)
4307 /* Set plt entry size. */
4308 elf_section_data (htab->splt->output_section)
4309 ->this_hdr.sh_entsize = PLT_ENTRY_SIZE;
4311 if (htab->need_plt_stub)
4313 /* Set up the .plt stub. */
4314 memcpy (htab->splt->contents
4315 + htab->splt->_raw_size - sizeof (plt_stub),
4316 plt_stub, sizeof (plt_stub));
4318 if ((htab->splt->output_offset
4319 + htab->splt->output_section->vma
4320 + htab->splt->_raw_size)
4321 != (htab->sgot->output_offset
4322 + htab->sgot->output_section->vma))
4324 (*_bfd_error_handler)
4325 (_(".got section not immediately after .plt section"));
4334 /* Tweak the OSABI field of the elf header. */
4337 elf32_hppa_post_process_headers (abfd, link_info)
4339 struct bfd_link_info *link_info ATTRIBUTE_UNUSED;
4341 Elf_Internal_Ehdr * i_ehdrp;
4343 i_ehdrp = elf_elfheader (abfd);
4345 if (strcmp (bfd_get_target (abfd), "elf32-hppa-linux") == 0)
4347 i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_LINUX;
4351 i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_HPUX;
4355 /* Called when writing out an object file to decide the type of a
4358 elf32_hppa_elf_get_symbol_type (elf_sym, type)
4359 Elf_Internal_Sym *elf_sym;
4362 if (ELF_ST_TYPE (elf_sym->st_info) == STT_PARISC_MILLI)
4363 return STT_PARISC_MILLI;
4368 /* Misc BFD support code. */
4369 #define bfd_elf32_bfd_is_local_label_name elf_hppa_is_local_label_name
4370 #define bfd_elf32_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup
4371 #define elf_info_to_howto elf_hppa_info_to_howto
4372 #define elf_info_to_howto_rel elf_hppa_info_to_howto_rel
4374 /* Stuff for the BFD linker. */
4375 #define bfd_elf32_bfd_final_link elf32_hppa_final_link
4376 #define bfd_elf32_bfd_link_hash_table_create elf32_hppa_link_hash_table_create
4377 #define elf_backend_add_symbol_hook elf32_hppa_add_symbol_hook
4378 #define elf_backend_adjust_dynamic_symbol elf32_hppa_adjust_dynamic_symbol
4379 #define elf_backend_copy_indirect_symbol elf32_hppa_copy_indirect_symbol
4380 #define elf_backend_check_relocs elf32_hppa_check_relocs
4381 #define elf_backend_create_dynamic_sections elf32_hppa_create_dynamic_sections
4382 #define elf_backend_fake_sections elf_hppa_fake_sections
4383 #define elf_backend_relocate_section elf32_hppa_relocate_section
4384 #define elf_backend_hide_symbol elf32_hppa_hide_symbol
4385 #define elf_backend_finish_dynamic_symbol elf32_hppa_finish_dynamic_symbol
4386 #define elf_backend_finish_dynamic_sections elf32_hppa_finish_dynamic_sections
4387 #define elf_backend_size_dynamic_sections elf32_hppa_size_dynamic_sections
4388 #define elf_backend_gc_mark_hook elf32_hppa_gc_mark_hook
4389 #define elf_backend_gc_sweep_hook elf32_hppa_gc_sweep_hook
4390 #define elf_backend_object_p elf32_hppa_object_p
4391 #define elf_backend_final_write_processing elf_hppa_final_write_processing
4392 #define elf_backend_post_process_headers elf32_hppa_post_process_headers
4393 #define elf_backend_get_symbol_type elf32_hppa_elf_get_symbol_type
4394 #define elf_backend_reloc_type_class elf32_hppa_reloc_type_class
4396 #define elf_backend_can_gc_sections 1
4397 #define elf_backend_can_refcount 1
4398 #define elf_backend_plt_alignment 2
4399 #define elf_backend_want_got_plt 0
4400 #define elf_backend_plt_readonly 0
4401 #define elf_backend_want_plt_sym 0
4402 #define elf_backend_got_header_size 8
4404 #define TARGET_BIG_SYM bfd_elf32_hppa_vec
4405 #define TARGET_BIG_NAME "elf32-hppa"
4406 #define ELF_ARCH bfd_arch_hppa
4407 #define ELF_MACHINE_CODE EM_PARISC
4408 #define ELF_MAXPAGESIZE 0x1000
4410 #include "elf32-target.h"
4412 #undef TARGET_BIG_SYM
4413 #define TARGET_BIG_SYM bfd_elf32_hppa_linux_vec
4414 #undef TARGET_BIG_NAME
4415 #define TARGET_BIG_NAME "elf32-hppa-linux"
4417 #define INCLUDED_TARGET_FILE 1
4418 #include "elf32-target.h"